James:
Basically this product is a flush-mounted interchangeable decorative panel for kitchens and possibly other areas in the home. The panels can be purchased pre-made or created by the customer; the site shows options such as artwork and more substantial-appearing materials like ceramic tiles and mosaics.
The panel has a push-to-release mechanism behind it, and the idea is that a homeowner can swap one panel for another as desired.
The installation instructions explain the details.
It isn’t designed as a hiding place, and there isn’t much room behind it as it is, but it would be fine for smaller items. It would also be pretty easy to adapt the design to be more difficult to discover, for example by using a magnetic release.
Seems to me that something resembling a permanently installed inlaid mosaic wouldn’t draw a second glance from most burglars. Just a thought.
Best Regards, – P.N.G.