Simple home-made setup for The vOICe with a tiny USB webcam, in this case an old Creative Webcam NoteBook webcam (with CMOS sensor, not CCD) glued on top of regular stereo headphones.

For starters it may be recommended to first evaluate The vOICe with a cheap home-made setup, for instance based on USB camera sunglasses or the FlyCamOne2. Although some of the head-mounted covert camera devices may have been intended for undercover surveillance operations and may be sold via so-called "spy shops", their unobtrusive appearance is also a good match to the aesthetic requirements of blind users: their preferred setup is often one which is camouflaged in such a way that it is effectively "invisible".