Here's an article that applied biometric fingerprint technology to the challenges faced by those in positions of responsibility for the elderly.
Fingerprint recording technology has the potential to make life easier for elderly and vulnerable people (PublicService.co.uk)
Fingerprint biometric systems can help to support the safety and security of many people, ranging from the elderly and infirm to someone with an armful of shopping. For the elderly and vulnerable, it can help by allowing them to signal that they are up, are active during the day and have gone to bed safely. The technology is available to accurately scan and record fingerprints with reader technology that is robust and reliable. The other attraction is its simplicity in use, just requiring the reader to place the finger on a pad to take a positive scan. The pad won't be lost like a key or swipe card.
