As smartwatches grow more powerful and add more utility, they’re starting to hold as much personal weight as our phones. This means that an easy way to lock and unlock it becomes imperative. Even the best smartwatches opt for PIN-based systems, but if you’ve ever used a smartwatch for payments, you’ll know that typing these figures into shrunken screens is awkward and annoying. A faster, alternative authentication method, like a smartwatch fingerprint sensor, would ideally quickly solve this issue.