Introducing the Repeater Sticker Pack (2 stickers per pack) (RSP) – game-changer for improving the performance of NFC readers, particularly with implanted transponders. By attaching the repeater sticker to your smartphone, lock, reader, etc. you’ll experience enhanced coupling performance when presenting implanted transponders to the sticker area. The sticker should be positioned over just part of the antenna rather than in the center. This forces the lines of flux to flow through the sticker and concentrate as the sticker re-emits its own concentrated field. Before applying sticker, it’s best to prepare surface with included alcohol prep pad.