3D Wall Door Sticker, eBay, £11.95 - buy now People reckoned dogs and those under the influence would have the most trouble with the optical illusion, and try and walk up the stairs.

Neural network technology harnessed to turn your selfies into cartoon-like stickers. Written by Liam Tung, Contributing Writer May 12, 2017 at 4:54 a.m. PT ...