One of the many slots in MacBooks that has disappeared over the years is the security slot. For anyone who doesn’t remember these from the pre-Retina machines, this was a small horizontal slot into which you could insert a T-shaped security lock attached to a cable.
You ran the cable around something solid like a desk leg, fed it back through a loop and then inserted the lock into the slot on your Mac. Locking it would twist the T-shaped element 90 degrees, securing it in place.
It wasn’t the highest security in the world – cable locks can be easily snipped with hand croppers – but it protected against opportunist snatch thieves in places like libraries and coffee shops. As of the Retina MacBook Pro, however, Apple removed the slot …
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