I only just noticed this, nicked the article from a well known site
Could be handy, aint technology wonderful
item 322336446271
Bluetooth enabled padlock
Keyless trackable security Ever lost a key? Forgotten a password or digit combination? Or had keys in the wrong place at the wrong time? Imagine if, by some super force, you could share your ‘key’ with someone in a different region, city, state –even country –in an instant. And could securely share multiple ‘keys’ instantly, yet still enjoy the confidence to, just as quickly, take those ‘keys’ away, without even asking or swapping one physical key! Fortunately, this reality is here right now! A new keyless future. And with security and tracking like none bestowed before by our humble metal key. By using your mobile device, you can open your LockSmart Mini padlock without any physical keys, conveniently share virtual keys in an instant, take ‘keys’ away, and track your lock’s use. LockSmart’s keyless Bluetooth padlock is much more than a lock. LockSmart gives you trackable keyless security. No more keys! We’ve all been there before – lost or misplaced a key. Right? No more! Simply download the app, pair it with LockSmart Mini and you’re done! Through low energy Bluetooth, any compatible smartphone* acts as the key.