Lockly Duo review: Two smart locks in one installation headache

Most smart locks come in the form of a deadbolt, though you'll find the latch-and-lever design an occasional option. If, like many homes, you already have both on your door, you're faced with a bit of a dilemma when it comes to upgrading to smart tech. The common solution is to update the deadbolt, then stop using the locking mechanism on the latch altogether. But many people prefer the added security of having two locking mechanisms, so then what: Install two smart locks? Lockly, which last combined a smart lock and a video doorbell into a bizarre but effective product, has come up with a solution of sorts, putting both a latch and a deadbolt in a single, if exceedingly awkward, mechanism.