One of my friends who work in the jewellery and watch industry wants to develop some bracelets with NFC functions for mobile payment and/or lighting control. Now, he wants to know the suitable NFC chipset to be selected, and related knowledge about the hardware, software and mechnical design, as well as the materials they can use or not use in the bracelets/necklace. For these information, are you the right person to talk to? Or who should I contact with? My friend's company is a Swiss company, selling jewellery and watches globally, with a purchasing hub in Hong Kong. And my friend is working in this HK office. Thanks a lot in advance for your help.