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The system uses low-cost electronics and sensors, including two electronic compasses, to detect the position of the magnet in the mouth. One compass estimates the magnet\u2019s position while the other is used as a reference to compensate for static magnetic fields. A microcontroller processes the data using a computational algorithm that takes the mathematical formulations of the magnetic fields as input in real time. The system has been tested using real data to control an electric wheelchair, and it has been shown that a trained user can effectively use tongue movements as an interface for the wheelchair or a computer.<\/jats:p>","DOI":"10.3390\/s23021024","type":"journal-article","created":{"date-parts":[[2023,1,16]],"date-time":"2023-01-16T03:10:34Z","timestamp":1673838634000},"page":"1024","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Low Cost Magnetic Field Control for Disabled People"],"prefix":"10.3390","volume":"23","author":[{"given":"Daniel","family":"Acosta","sequence":"first","affiliation":[{"name":"Computer Science and Systems Department, Universidad de La Laguna, 38200 San Cristobal de La Laguna, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8921-4635","authenticated-orcid":false,"given":"Bibiana","family":"Fari\u00f1a","sequence":"additional","affiliation":[{"name":"Computer Science and Systems Department, Universidad de La Laguna, 38200 San Cristobal de La Laguna, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jonay","family":"Toledo","sequence":"additional","affiliation":[{"name":"Computer Science and Systems Department, Universidad de La Laguna, 38200 San Cristobal de La Laguna, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9428-4507","authenticated-orcid":false,"given":"Leopoldo Acosta","family":"Sanchez","sequence":"additional","affiliation":[{"name":"Computer Science and Systems Department, Universidad de La Laguna, 38200 San Cristobal de La Laguna, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,1,16]]},"reference":[{"key":"ref_1","first-page":"545","article-title":"A Survey on Intelligent Wheelchair Prototypes and Simulators","volume":"Volume 1","author":"Rocha","year":"2014","journal-title":"New Perspectives in Information Systems and Technologies"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"88","DOI":"10.1080\/10400435.2012.723297","article-title":"Evaluation of Distinct Input Methods of an Intelligent Wheelchair in Simulated and Real Environments: A Performance and Usability Study","volume":"25","author":"Vasconcelos","year":"2013","journal-title":"Assist. 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