Touch, Smell, Taste, See, Hear: the five senses as we know them. If you dig deeper though, you’ll find that many more exist. Dig down further, you’ll see that we’re able to create even more with machines.In this episode, we speak to two big names in biohacking. Amal Graafstra, whose company Vivokey, makes payments and unlocks doors by sticking NFC chips in people’s hands. Next, Frank Swain, the man who hacked his own hearing aid to hear WiFi.