MIFARE Classic support is quite good : the device will search through its (somewhat exhaustive) list of known keys, to attempt to unlock your badge.

If keys aren't found, you can perform a "Reader Attack" - take the nonces from the log during a sniffed authenticated exchange, place them in a MF32Key tool (there are online versions as well) - and this will calculate the key.

The device doesn't have enough computational power to crack on board (for that you need a Proxmark / iCopy-X) - but the team has roadmapped a tethered mode for performing these cracks.