The video doesn't quite show what is the great features that Hotknot delivers while NFC couldn't. To me, it comes down to the choice between literally touch vs proximity. I prefer the latter that NFC delivers.
On the other hands, BLE is aiming the eWallet market as well. It might be interesting to compare all 3 techologies and rate their pros and cons.
As we unveil EE Times’ 2015 Silicon 60 list, journalist & Silicon 60 researcher Peter Clarke hosts a conversation on startups in the electronics industry. Panelists Dan Armbrust (investment firm Silicon Catalyst), Andrew Kau (venture capital firm Walden International), and Stan Boland (successful serial entrepreneur, former CEO of Neul, Icera) join in the live debate.