Now that we're living in the age of sufficient fingerprint sensors, devices like the TappLock are on the rise. The creators of the TappLock have embedded a fingerprint sensor (aka a fingerprint reader) into a padlock, allowing the user to do away with keys altogether. This system, they suggest, will allow you to "never worry about losing your keys, forgetting your combination code, or getting your locks picked again." That is, until the device's sensor malfunctions. But that'll never happen, right?