What is "tamperproof"

Usage examples of "tamperproof".

He was turning over a tamperproof twenty flatpack of Serenax in his pudgy fingers.

And if this expert was so good, maybe he could figure out which function key controlled the security satellite bypass and how Klonski-Boronov had managed to scramble supposedly tamperproof chips.

Jennifer slipped the tamperproof envelope into a bigger Priority Mail bag, and grabbed a ballpoint pen to fill out the adhesive waybill.

She cut the connection, slammed the lock shut, activated the tamperproof field on her hull.