The Kitty Pass Interior Cat Door from Amazon capitalizes on this ... You can use this option in place of or in addition to a standard pet flap door. A consultation with the creator may be required ...

No sooner does he have the flap in place than a brave kitty gives it a test run. Hopefully he doesn’t have the kind of pests that caused other hackers to build facial recognition cat door locks.

If you have pet with a little access door to the outside world, and that pet happens to be a cat, you’re likely on the receiving end of all kinds of lifeless little lagniappes. Don’t worry ...