The Holy Trainer Magic Lock is delivered with 2 keys and is generally airport & security gates friendly. Locks sold in 2018 are now numbered so that replacements can be acquired.
Holy Trainer Magic Lock (new in version 2). New design makes it impossible to remove without breaking the device! No more padlocks!
There is one lock with two keys included in the Holy Trainer full package. Additional keys or blanks are not available at this time.
There are 20 different key possibilities, so purchasing a second lock is very unlikely to be compatible with the first one.