For now, Flappie Smart Cat Flap can only tell if a cat has something in its mouth with 90% accuracy. To train the cat not to bring animals inside, the Flappie Smart Cat Flap will lock the door unless the cat drops it. Although there is still a small chance a mart cat might trick the system, but generally it should work.
Besides, Flappie can be set to allow certain pets in.
The product (Flappie Smart Cat Flap) starts at 379 CHF.