Kinda similar Petey, just a little more sophisticated. You pair the card key or pendant with the lock so only the approved keys/pendants can open it. I think the lock was all of about $15 on Amazon. Nothing super special or super secure, but it’s nice because it’s invisible, much like the magnetic locks. It does use batteries, which is a downside, but it gives you audible warnings when the batteries are low…and it’s supposed to be good for over a year with ‘multiple openings a day’. 

Ryan/// ~sigh~ I blew up another bowl. Moke told me "I made the inside bigger than the outside".