We understand your concern and want you to feel 100% safe and stress-free. We designed Perifit so that all the signal "broadcasting magic" happens outside of your body on the tail of the Perifit.
That means there won't be any signal going through your internal organs. A Wi-Fi signal is 100 times more powerful than Perifit's signal (Bluetooth Low Energy). In other words, Perifit is 100 times safer than your phone.