HTC One - NFC Issue

If you want to Send Data through NFC from any smart phone to HTC One make sure sender phone is higher than the HTC One, make sure the camera of your sender phone is almost at the top white line of HTC One.

*No need to enable Bluetooth or anything, just enable NFC in both phone.

You don't have any devices - Google Play website

Go to Settings > Apps > All > Scroll Down And Select Google Play Store > Force stop and clear data.
Also do the same for "Google Play Services" (Just for the safe side)
Then open the play store again on your device and accept the terms and conditions.

Wait 15 minutes or 30 minutes or 1 hour, you will see your device.