1,980
Views
74
CrossRef citations to date
0
Altmetric
Original Articles

Usability of a new electronic assistive device for community-dwelling persons with mild dementia

, , , , , , , , , & show all
Pages 584-591 | Received 21 Jul 2011, Accepted 26 Nov 2011, Published online: 24 Feb 2012

Keep up to date with the latest research on this topic with citation updates for this article.

Read on this site (13)

J. H. W. (Coosje) Hammink, J. A. (Nienke) Moor & M. (Masi) Mohammadi. (2023) Influencing health behaviour using smart building interventions for people with dementia and mild cognitive impairment: expert interviews and a systematic literature review. Disability and Rehabilitation: Assistive Technology 18:7, pages 1175-1191.
Read now
Sandra Suijkerbuijk, Henk Herman Nap, Wijnand A. Ijsselsteijn, Mirella M.N. Minkman & Yvonne A.W. de Kort. (2023) ‘I already forgot half of it’ – Interviewing people with dementia for co-designing an intelligent system. Human–Computer Interaction 0:0, pages 1-32.
Read now
Antonio Miguel Cruz, Christine Daum, Aidan Comeau, Juan David Guevara Salamanca, Lauren McLennan, Noelannah Neubauer & Lili Liu. (2023) Acceptance, adoption, and usability of information and communication technologies for people living with dementia and their care partners: a systematic review. Disability and Rehabilitation: Assistive Technology 18:4, pages 443-457.
Read now
Laurence Benoit-Dubé, Eudia Kévine Jean, Melissa Arriola Aguilar, Ana-Marcia Zuniga, Nathalie Bier, Mélanie Couture, Maxime Lussier, Xanthy Lajoie & Patrícia Belchior. (2023) What facilitates the acceptance of technology to promote social participation in later life? A systematic review. Disability and Rehabilitation: Assistive Technology 18:3, pages 274-284.
Read now
Julie Faieta, Jamie Sheehan & Carmen DiGiovine. (2022) Mhealth interventions to improve health and quality of life related outcomes for informal dementia caregivers: A scoping review. Assistive Technology 34:3, pages 362-374.
Read now
Yvonne Kerkhof, Gianna Kohl, Melanie Veijer, Floriana Mangiaracina, Ad Bergsma, Maud Graff & Rose-Marie Dröes. (2022) Randomized controlled feasibility study of FindMyApps: first evaluation of a tablet-based intervention to promote self-management and meaningful activities in people with mild dementia. Disability and Rehabilitation: Assistive Technology 17:1, pages 85-99.
Read now
Andrew Brown & Siobhan O’Connor. (2020) Mobile health applications for people with dementia: a systematic review and synthesis of qualitative studies. Informatics for Health and Social Care 45:4, pages 343-359.
Read now
François Patou, Nicholas Ciccone, Julia Thorpe & Anja Maier. (2020) Designing P4 healthcare interventions for managing cognitive decline and dementia: where are we at?. Journal of Engineering Design 31:7, pages 379-398.
Read now
V. Zander, R.-M. Johansson-Pajala & C. Gustafsson. (2020) Methods to evaluate perspectives of safety, independence, activity, and participation in older persons using welfare technology. A systematic review. Disability and Rehabilitation: Assistive Technology 15:4, pages 373-393.
Read now
Torhild Holthe, Liv Halvorsrud, Dag Karterud, Kari-Anne Hoel & Anne Lund. (2018) Usability and acceptability of technology for community-dwelling older adults with mild cognitive impairment and dementia: a systematic literature review. Clinical Interventions in Aging 13, pages 863-886.
Read now
Lili Liu, Antonio Miguel Cruz & Don Juzwishin. (2018) Caregivers as a proxy for responses of dementia clients in a GPS technology acceptance study. Behaviour & Information Technology 37:6, pages 634-645.
Read now
Edith Pulido Herrera. (2017) Location-based technologies for supporting elderly pedestrian in “getting lost” events. Disability and Rehabilitation: Assistive Technology 12:4, pages 315-323.
Read now
B. J. J. Hattink, F. J. M. Meiland, T. Overmars-Marx, M. de Boer, P. W. G. Ebben, M. van Blanken, S. Verhaeghe, I. Stalpers-Croeze, A. Jedlitschka, S. E. Flick, J. v/d Leeuw, I. Karkowski & R. M. Dröes. (2016) The electronic, personalizable Rosetta system for dementia care: exploring the user-friendliness, usefulness and impact. Disability and Rehabilitation: Assistive Technology 11:1, pages 61-71.
Read now

Articles from other publishers (61)

Linda Clare, Claire Pentecost, Rachel Collins, Anthony Martyr, Rachael Litherland, Robin G Morris, Catherine Quinn, Laura D Gamble, Serena Sabatini & Christina Victor. (2023) Evaluating ‘living well’ with mild-to-moderate dementia: Co-production and validation of the IDEAL My Life Questionnaire. Dementia.
Crossref
Emily A. Hellis & Elizabeta B. Mukaetova-Ladinska. 2023. Artificial Intelligence for Healthy Longevity. Artificial Intelligence for Healthy Longevity 91 114 .
Simona Hvalič‐Touzery, Vesna Dolničar & Katja Prevodnik. (2022) Factors influencing informal carers' acceptance of assistive telecare systems in the pre‐ and post‐implementation phase: A scoping study. Health & Social Care in the Community 30:5.
Crossref
Jihyun Shin & Sangeun Shin. (2022) The Effects of Augmentative and Alternative Communication Intervention for Individuals with Dementia: Meta-Analysis. Communication Sciences & Disorders 27:2, pages 371-383.
Crossref
Viktoria Hoel, Carine Mendom Feunou & Karin Wolf-Ostermann. (2021) Technology-driven solutions to prompt conversation, aid communication and support interaction for people with dementia and their caregivers: a systematic literature review. BMC Geriatrics 21:1.
Crossref
Nathalie Swinnen, Eling D. de Bruin, Chantal Dumoulin, Melanie Thalmann, Vânia Guimarães, Jacqueline De Jong, Mathieu Vandenbulcke & Davy Vancampfort. (2021) The VITAAL Stepping Exergame Prototype for Older Adults With Major Neurocognitive Disorder: A Usability Study. Frontiers in Aging Neuroscience 13.
Crossref
Thomas Engelsma, Monique W.M. Jaspers & Linda W Peute. (2021) Considerate mHealth design for older adults with Alzheimer’s disease and related dementias (ADRD): A scoping review on usability barriers and design suggestions. International Journal of Medical Informatics 152, pages 104494.
Crossref
Juanita Hoe & Martin Orrell. 2021. Camberwell Assessment of Need for the Elderly. Camberwell Assessment of Need for the Elderly 97 104 .
Ellen-Marie Forsberg, Erik Thorstensen, Flávia Dias Casagrande, Torhild Holthe, Liv Halvorsrud, Anne Lund & Evi Zouganeli. (2021) Is RRI a new R&I logic? A reflection from an integrated RRI project. Journal of Responsible Technology 5, pages 100007.
Crossref
Sarah El-Wahsh, Penelope Monroe, Fiona Kumfor & Kirrie Ballard. 2021. Dementia Rehabilitation. Dementia Rehabilitation 35 56 .
Harleen Kaur Rai, Aline Cavalcanti Barroso, Lauren Yates, Justine Schneider & Martin Orrell. (2020) Involvement of People With Dementia in the Development of Technology-Based Interventions: Narrative Synthesis Review and Best Practice Guidelines. Journal of Medical Internet Research 22:12, pages e17531.
Crossref
Caroline White, Rosie Dunn, Emma Wolverson & Evi Zafeiridi. (2020) The views of carers, people living with dementia and healthcare practitioners about the value of online information and peer support. International Journal of Care and Caring 4:4, pages 549-571.
Crossref
Andrew Sixsmith, Judith Sixsmith, Mei Lan Fang & Becky Horst. (2020) AgeTech, Cognitive Health, and Dementia. Synthesis Lectures on Assistive, Rehabilitative, and Health-Preserving Technologies 9:2, pages i-166.
Crossref
Jindong Ding Petersen, Eva Ladekjær Larsen, Karen la Cour, Cecilie von Bülow, Malene Skouboe, Jeanette Reffstrup Christensen & Frans Boch Waldorff. (2020) Motion-Based Technology for People With Dementia Training at Home: Three-Phase Pilot Study Assessing Feasibility and Efficacy. JMIR Mental Health 7:8, pages e19495.
Crossref
Hannah L. Heintz & Ipsit V. Vahia. (2020) Implementing adaptive technologies in dementia care: local solutions for a global problem. International Psychogeriatrics 32:8, pages 897-899.
Crossref
Laila Øksnebjerg, Janet Janbek, Bob Woods & Gunhild Waldemar. (2019) Assistive technology designed to support self-management of people with dementia: user involvement, dissemination, and adoption. A scoping review. International Psychogeriatrics 32:8, pages 937-953.
Crossref
Laila Øksnebjerg, Bob Woods, Kathrine Ruth, Annette Lauridsen, Susanne Kristiansen, Helle Dalsgaard Holst & Gunhild Waldemar. (2020) A Tablet App Supporting Self-Management for People With Dementia: Explorative Study of Adoption and Use Patterns. JMIR mHealth and uHealth 8:1, pages e14694.
Crossref
Yavuz Inal, Jo Dugstad Wake, Frode Guribye & Tine Nordgreen. (2020) Usability Evaluations of Mobile Mental Health Technologies: Systematic Review. Journal of Medical Internet Research 22:1, pages e15337.
Crossref
Laura Ramos, Laurie Miller & Elise van den Hoven. 2020. HCI and Design in the Context of Dementia. HCI and Design in the Context of Dementia 131 146 .
Nina Rohrbach, Philipp Gulde, Alan Robert Armstrong, Linda Hartig, Anas Abdelrazeq, Stefan Schröder, Johanne Neuse, Timo Grimmer, Janine Diehl-Schmid & Joachim Hermsdörfer. (2019) An augmented reality approach for ADL support in Alzheimer’s disease: a crossover trial. Journal of NeuroEngineering and Rehabilitation 16:1.
Crossref
Vimal Sriram, Crispin Jenkinson & Michele Peters. (2019) Informal carers’ experience of assistive technology use in dementia care at home: a systematic review. BMC Geriatrics 19:1.
Crossref
A Hasan Sapci & H Aylin Sapci. (2019) Innovative Assisted Living Tools, Remote Monitoring Technologies, Artificial Intelligence-Driven Solutions, and Robotic Systems for Aging Societies: Systematic Review. JMIR Aging 2:2, pages e15429.
Crossref
Gubing Wang, Chiara Marradi, Armagan Albayrak & Tischa J.M. van der Cammen. (2019) Co-designing with people with dementia: A scoping review of involving people with dementia in design research. Maturitas 127, pages 55-63.
Crossref
Ioulietta Lazarou, Thanos G. Stavropoulos, Georgios Meditskos, Stelios Andreadis, Ioannis (Yiannis) Kompatsiaris & Magda Tsolaki. (2019) Long-Term Impact of Intelligent Monitoring Technology on People with Cognitive Impairment: An Observational Study. Journal of Alzheimer's Disease 70:3, pages 757-792.
Crossref
Eva Barrett, Megan Burke, Sally Whelan, Adam Santorelli, Barbara Luz Oliveira, Filippo Cavallo, Rose-Marie Dröes, Louise Hopper, Ainna Fawcett-Henesy, Franka J.M. Meiland, Gail Mountain, Wendy Moyle, Massimiliano Raciti, Geoff Pegman, Aimee Teare, Daniele Sancarlo, Francesco Riccardi, Grazia D'Onofrio, Francesco Giuliani, Alessandro Russo, Andy Bleaden, Antonio Greco & Dympna Casey. (2019) Evaluation of a Companion Robot for Individuals With Dementia: Quantitative Findings of the MARIO Project in an Irish Residential Care Setting. Journal of Gerontological Nursing 45:7, pages 36-45.
Crossref
Sandra Suijkerbuijk, Henk Herman Nap, Lotte Cornelisse, Wijnand A. IJsselsteijn, Yvonne A.W. de Kort & Mirella M.N. Minkman. (2019) Active Involvement of People with Dementia: A Systematic Review of Studies Developing Supportive Technologies. Journal of Alzheimer's Disease 69:4, pages 1041-1065.
Crossref
Leonieke van Boekel, Eveline Wouters, Bea Grimberg, Nardo van der Meer & Katrien Luijkx. (2019) Perspectives of Stakeholders on Technology Use in the Care of Community-Living Older Adults with Dementia: A Systematic Literature Review. Healthcare 7:2, pages 73.
Crossref
Paul-Ariel Kenigsberg, Jean-Pierre Aquino, Alain Bérard, François Brémond, Kevin Charras, Tom Dening, Rose-Marie Droës, Fabrice Gzil, Ben Hicks, Anthea Innes, Sao-Mai Nguyen, Louise Nygård, Maribel Pino, Guillaume Sacco, Eric Salmon, Henriëtte van der Roest, Hervé Villet, Marion Villez, Philippe Robert & Valeria Manera. (2017) Assistive Technologies to Address Capabilities of People with Dementia: From Research to Practice. Dementia 18:4, pages 1568-1595.
Crossref
Karine Latulippe, Manon Guay, Sophie Éthier, Andrée Sévigny, Véronique Dubé, Véronique Provencher, Valérie Poulin, Anick MC Giguere, Mélanie Tremblay, Maude Carignan & Dominique Giroux. (2019) Supporting the Process of Help-Seeking by Caregivers of Functionally Dependent Older Persons Through Electronic Health: Protocol for a Multicenter Co-Design. JMIR Research Protocols 8:4, pages e11634.
Crossref
Gaye Moore, Helen Wilding, Kathleen Gray & David Castle. (2019) Participatory Methods to Engage Health Service Users in the Development of Electronic Health Resources: Systematic Review. Journal of Participatory Medicine 11:1, pages e11474.
Crossref
Ganesh M. Babulal, Yakeel T. Quiroz, Benedict C. Albensi, Eider Arenaza‐Urquijo, Arlene J. Astell, Claudio Babiloni, Alex Bahar‐Fuchs, Joanne Bell, Gene L. Bowman, Adam M. Brickman, Gaël Chételat, Carrie Ciro, Ann D. Cohen, Peggye Dilworth‐Anderson, Hiroko H. Dodge, Simone Dreux, Steven Edland, Anna Esbensen, Lisbeth Evered, Michael Ewers, Keith N. Fargo, Juan Fortea, Hector Gonzalez, Deborah R. Gustafson, Elizabeth Head, James A. Hendrix, Scott M. Hofer, Leigh A. Johnson, Roos Jutten, Kerry Kilborn, Krista L. Lanctôt, Jennifer J. Manly, Ralph N. Martins, Michelle M. Mielke, Martha Clare Morris, Melissa E. Murray, Esther S. Oh, Mario A. Parra, Robert A. Rissman, Catherine M. Roe, Octavio A. Santos, Nikolaos Scarmeas, Lon S. Schneider, Nicole Schupf, Sietske Sikkes, Heather M. Snyder, Hamid R. Sohrabi, Yaakov Stern, Andre Strydom, Yi Tang, Graciela Muniz Terrera, Charlotte Teunissen, Debora Melo van Lent, Michael Weinborn, Linda Wesselman, Donna M. Wilcock, Henrik Zetterberg & Sid E. O'Bryant. (2018) Perspectives on ethnic and racial disparities in Alzheimer's disease and related dementias: Update and areas of immediate need. Alzheimer's & Dementia 15:2, pages 292-312.
Crossref
Yvonne Kerkhof, Myrna Pelgrum-Keurhorst, Floriana MangiaracinaAd BergsmaGuus Vrauwdeunt, Maud GraffRose-Marie Dröes. (2019) User-participatory development of FindMyApps; a tool to help people with mild dementia find supportive apps for self-management and meaningful activities. DIGITAL HEALTH 5, pages 205520761882294.
Crossref
Carolin Schreiber, Jan Üblacker, Diana Cürlis & Nora Weber. 2019. Dementia Lab 2019. Making Design Work: Engaging with Dementia in Context. Dementia Lab 2019. Making Design Work: Engaging with Dementia in Context 12 23 .
Amanda Lazar, Hilaire J. Thompson & George Demiris. (2016) Design Recommendations for Recreational Systems Involving Older Adults Living With Dementia. Journal of Applied Gerontology 37:5, pages 595-619.
Crossref
Alison Bowes, Alison Dawson & Louise McCabe. (2016) RemoDem: Delivering support for people with dementia in remote areas. Dementia 17:3, pages 297-314.
Crossref
Paraskevi Zafeiridi, Kevin Paulson, Rosie Dunn, Emma Wolverson, Caroline White, Jonathan Adrian Thorpe, Marco Antomarini, Francesca Cesaroni, Francesca Scocchera, Isabelle Landrin-Dutot, Laëtitia Malherbe, Hendi Lingiah, Marie Bérard, Xavier Gironès, Maria Quintana, Ulises Cortés, Cristian Barrué, Atia Cortés, Ioannis Paliokas, Konstantinos Votis & Dimitrios Tzovaras. (2018) A Web-Based Platform for People With Memory Problems and Their Caregivers (CAREGIVERSPRO-MMD): Mixed-Methods Evaluation of Usability. JMIR Formative Research 2:1, pages e4.
Crossref
Mireille Gagnon-Roy, Annick Bourget, Stéphanie Stocco, Annie-Claude Lemieux Courchesne, Nicolas Kuhne & Véronique Provencher. (2017) Assistive Technology Addressing Safety Issues in Dementia: A Scoping Review. The American Journal of Occupational Therapy 71:5, pages 7105190020p1-7105190020p10.
Crossref
Daniel R Bateman, Bhavana Srinivas, Thomas W Emmett, Titus K Schleyer, Richard J Holden, Hugh C Hendrie & Christopher M Callahan. (2017) Categorizing Health Outcomes and Efficacy of mHealth Apps for Persons With Cognitive Impairment: A Systematic Review. Journal of Medical Internet Research 19:8, pages e301.
Crossref
Charlie Tyack & Paul M. Camic. (2017) Touchscreen interventions and the well-being of people with dementia and caregivers: a systematic review. International Psychogeriatrics 29:8, pages 1261-1280.
Crossref
Maurice Mulvenna, Anton Hutton, Vivien Coates, Suzanne Martin, Stephen Todd, Raymond Bond & Anne Moorhead. (2017) Views of Caregivers on the Ethics of Assistive Technology Used for Home Surveillance of People Living with Dementia. Neuroethics 10:2, pages 255-266.
Crossref
Henriëtte G Van der Roest, Jennifer Wenborn, Channah Pastink, Rose-Marie Dröes & Martin Orrell. (2017) Assistive technology for memory support in dementia. Cochrane Database of Systematic Reviews 2017:6.
Crossref
Marcello Ienca, Jotterand Fabrice, Bernice Elger, Maurizio Caon, Alessandro Scoccia Pappagallo, Reto W. Kressig & Tenzin Wangmo. (2017) Intelligent Assistive Technology for Alzheimer’s Disease and Other Dementias: A Systematic Review. Journal of Alzheimer's Disease 56:4, pages 1301-1340.
Crossref
Kwang-il Kim, Shreya S. Gollamudi & Steven Steinhubl. (2017) Digital technology to enable aging in place. Experimental Gerontology 88, pages 25-31.
Crossref
Franka Meiland, Anthea Innes, Gail Mountain, Louise Robinson, Henriëtte van der Roest, J Antonio García-Casal, Dianne Gove, Jochen René Thyrian, Shirley Evans, Rose-Marie Dröes, Fiona Kelly, Alexander Kurz, Dympna Casey, Dorota Szcześniak, Tom Dening, Michael P Craven, Marijke Span, Heike Felzmann, Magda Tsolaki & Manuel Franco-Martin. (2017) Technologies to Support Community-Dwelling Persons With Dementia: A Position Paper on Issues Regarding Development, Usability, Effectiveness and Cost-Effectiveness, Deployment, and Ethics. JMIR Rehabilitation and Assistive Technologies 4:1, pages e1.
Crossref
YJF Kerkhof, A Bergsma, MJL Graff & RM Dröes. (2017) Selecting apps for people with mild dementia: Identifying user requirements for apps enabling meaningful activities and self-management. Journal of Rehabilitation and Assistive Technologies Engineering 4, pages 205566831771059.
Crossref
Nazli Cila, Hester van Zuthem, Fleur Thomése, Wilma Otten, Franka Meiland & Ben Kröse. 2017. Human-Computer Interaction – INTERACT 2017. Human-Computer Interaction – INTERACT 2017 442 452 .
Franka Meiland, Johan van der Leeuw, Irek Karkowski & Rose-Marie Dröes. 2017. Handbook of Smart Homes, Health Care and Well-Being. Handbook of Smart Homes, Health Care and Well-Being 589 598 .
Julia Rosemary Thorpe, Kristoffer V.H. R⊘nn‐Andersen, Paulina Bień, Ali Gürcan Özkil, Birgitte Hysse Forchhammer & Anja M. Maier. (2016) Pervasive assistive technology for people with dementia: a UCD case. Healthcare Technology Letters 3:4, pages 297-302.
Crossref
Phil Joddrell & Arlene J Astell. (2016) Studies Involving People With Dementia and Touchscreen Technology: A Literature Review. JMIR Rehabilitation and Assistive Technologies 3:2, pages e10.
Crossref
Yvonne J. F. Kerkhof, Maud J. L. Graff, Ad Bergsma, Hilde H. M. de Vocht & Rose-Marie Dröes. (2016) Better self-management and meaningful activities thanks to tablets? Development of a person-centered program to support people with mild dementia and their carers through use of hand-held touch screen devices. International Psychogeriatrics 28:11, pages 1917-1929.
Crossref
Ioulietta Lazarou, Anastasios Karakostas, Thanos G. Stavropoulos, Theodoros Tsompanidis, Georgios Meditskos, Ioannis Kompatsiaris & Magda Tsolaki. (2016) A Novel and Intelligent Home Monitoring System for Care Support of Elders with Cognitive Impairment. Journal of Alzheimer's Disease 54:4, pages 1561-1591.
Crossref
Bart Hattink, Rose-Marie Droes, Sietske Sikkes, Ellen Oostra & Afina W Lemstra. (2016) Evaluation of the Digital Alzheimer Center: Testing Usability and Usefulness of an Online Portal for Patients with Dementia and Their Carers. JMIR Research Protocols 5:3, pages e144.
Crossref
Arlene J. Astell, Phil Joddrell, Hanny Groenewoud, Jacomine de Lange, Marleen Goumans, Anneloes Cordia & Yvonne Schikhof. (2016) Does familiarity affect the enjoyment of touchscreen games for people with dementia?. International Journal of Medical Informatics 91, pages e1-e8.
Crossref
Phil Joddrell, Alexandra Hernandez & Arlene J. Astell. 2016. Computers Helping People with Special Needs. Computers Helping People with Special Needs 509 514 .
Inga-Lill Boman, Stefan Lundberg, Sofia Starkhammar & Louise Nygård. (2014) Exploring the usability of a videophone mock-up for persons with dementia and their significant others. BMC Geriatrics 14:1.
Crossref
Nikola Nestorov, Emer Stone, Patrick Lehane & Richard Eibrand. (2014) Aspects of Socially Assistive Robots Design for Dementia Care. Aspects of Socially Assistive Robots Design for Dementia Care.
Catherine Best, Brian O'Neill & Alex Gillespie. 2014. Emerging Theory and Practice in Neuroprosthetics. Emerging Theory and Practice in Neuroprosthetics 215 236 .
Franka Meiland, Johan van der Leeuw, Irek Karkowski & Rose-Marie Dröes. 2021. Handbook of Smart Homes, Health Care and Well-Being. Handbook of Smart Homes, Health Care and Well-Being 1 8 .
Nirbhay N. Singh, Giulio E. Lancioni, Jeff Sigafoos, Mark F. O’Reilly & Alan S. W. Winton. 2014. Assistive Technologies for People with Diverse Abilities. Assistive Technologies for People with Diverse Abilities 219 250 .
Lorenzo T. D’Angelo, Joachim F. Kreutzer, Jakob Neuhaeuser, Samuel Reimer & Tim C. Lueth. 2014. Pervasive Health. Pervasive Health 181 210 .
Annakarin Olsson, Maria Engström, Claudia Lampic & Kirsti Skovdahl. (2013) A passive positioning alarm used by persons with dementia and their spouses – a qualitative intervention study. BMC Geriatrics 13:1.
Crossref

Reprints and Corporate Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

To request a reprint or corporate permissions for this article, please click on the relevant link below:

Academic Permissions

Please note: Selecting permissions does not provide access to the full text of the article, please see our help page How do I view content?

Obtain permissions instantly via Rightslink by clicking on the button below:

If you are unable to obtain permissions via Rightslink, please complete and submit this Permissions form. For more information, please visit our Permissions help page.