I’m heavily considering getting the VivoKey once it is available, or at least a NFC Flex. However, I’m unsure where to place it…
I know it’s recommended to place it within a non-gripping surface free of many veins/nerves. However, as a long time practitioner of MMA, almost every surface of my arms it either a striking surface or a surface that will receive strikes. The less likely a surface to be struck during sparring, etc, the less convenient it will be to present the Flex to a relevant peripheral/reader.
I can always wear wrist guards that could dampen the impact, but I am not very keen on having a sensitive device receive moderate amounts of force on a regular basis, protected by gear or otherwise.