This bike lock from Abus costs £240 – and doesn't have a key

But you do get an app that remembers where you left your bike

At the heart of the new Abus SmartX lock is an electronically controlled locking cylinder, locked and unlocked via a small motor buried in the barrel.

That’s activated via the Abus app on your smartphone, with an encrypted Bluetooth connection to the lock. Once you’re over 2m away, the lock automatically secures itself and will automatically unlock too, once you’re back in range.

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