Yes, it works with HTC One (and First)
Finally HTC One is available in the US. We tested and verified that our little reader works with HTC One out of the box, no rooting or privileged software is needed. As a bonus, we tested and verified that it works with HTC First as well.
After having taken away the built-in MicroSD slot from their phones and left users in the cold without USB-OTG since a couple of years ago, HTC is now doing the right thing by supporting USB Mass Storage through the USB-OTG port. Maybe it is no coincidence that their sales started to tank a couple of years ago. Now HTC rectified part of that, maybe their sales will start to tick up a little?
Oh, one more thing -- we reached our 2nd stretch goal today, so every reader will come bundled with a USB-to-MicroUSB adapter so you can use it on your PC as well. It works on Windows 7/8, Mac, and Linux. Please help us spread the word and keep it going. Our next stretch goal is $68k, there will be something once that is reached. Stay tuned.