I happened to study the process few days ago. Officer pulled out an elaborate form, asked the guy if he wants his copy, wants rights to the item if owner didn’t show up, to which he said no and no, and then he was asked to sign the blank and was told him they take care of the rest. Took 5-10 mins max.

Technically no one should ever sign a blank sheet, ever, but that could be done, I guess.