The Encoder Ring by Jonathan Ben-Tovim, lets you keep a specially coded message on a piece of jewelery. Only you, a computer, or maybe the IT guy will know what’s hidden on your finger. It can contain up to 64 characters of binary code. 8 Little bumps or indentations represent the 1′s and 0′s that make up each individual letter. Ben-Tovim hopes this concept design could be made on demand – people would pick their message, and the rings would be fabricated using 3D printing.