SHIELD has files on basically everyone and everything, so when the Avengers find themselves teaming up with Daredevil for the first time they're all pretty confident they know who the man is beneath the mask. Matt's just really confused when someone addresses him by a random name. The others misinterpret his silence and are all "oh no don't worry your secret's safe with us" etc.

Bonus if Matt just sort of goes along with the whole thing and trolls everyone for a while. He's got a secret identity for a reason, after all, and he's not about to just give it up.

Can include actual!identity reveal, but totally not necessary.
Also, facial recognition software is more of a suggestion than an actual must. Mistaken identity can be obtained by whichever hand-wavy design strikes your fancy.