This rigid, FR4 disc by Midwest Gadgets is a game-changer for improving the performance of NFC readers, particularly with implanted transponders. By using the repeater sticker with your smartphone, lock, reader, etc. you’ll experience enhanced coupling performance when presenting implanted transponders to the sticker area. The repeater should be positioned over just part of the antenna rather than in the center. This forces the lines of flux to flow through the disc and concentrates them as the disc re-emits its own concentrated field.

*Lego figure not included