Wearable gadgets are technological devices with limited computa-tional power that can be worn by users, providing them with information and seamless access to their master devices. It allows gadgets to connect and ex-change data, enabling various tasks to be completed online. Wearables have rev-olutionized human health monitoring, capturing data like blood-oxygen levels, step counts, and GPS tracking, which is stored in the cloud. However, additional user identification methods like PIN entering are cumbersome and prone to se-curity breaches like assaults involving visual hacking. In response to these con-cerns, various advanced authentication techniques have emerged. In our study, we thoroughly examined different user validation mechanisms intending to pro-vide thorough direction for further study in wearable technology domain
https://www.researchgate.net/publicatio ... le_Devices