In years past, vehicles with a TIP were issued with a special ‘holographic’ windscreen sticker that provided visual evidence of the vehicle’s legal status in Mexico.
Since January 1, 2020, Banjercito no longer issues holographic stickers for placement in the windshield and the permits are validated by email instead, although we recommend that you print out the documentation and keep it on-hand at all times, in case you cannot access your email if you are stopped and questioned about your vehicle’s presence in Mexico. You may be asked to show proof the vehicle’s legal presence in the country at any military checkpoint and/or by federal or traffic police.
If your vehicle still has a holographic sticker that is still valid, it’s important that you leave it in place and do not remove it. You should never remove the sticker yourself: the official at the Banjercito office at the border should do this for you when you cancel/surrender your permit.
You obviously haven't been here for a few years!!!