Recently a customer contacted me because their NFC Tags were not working and after some testing they found that the Qi Wireless Charging add on they had added to the back of their phone was interfering with the NFC feature. Since I don't use Wireless charging myself, I had to do some digging, but quickly found that the answer is SOME Qi Receivers which you add to the back of the phone WILL interfere while others are specially built to NOT interfere with the NFC. So if you're wanting to add wireless charging to your S4 or other device AND use NFC Tags, be sure to purchase a wireless receiver that specifies it is built to not interfere with the NFC capability. You also might want to read reviews and opinions of others to make sure it works as advertised. And in case you're wondering, you definitely can not put an NFC sticker on your wireless charging base and have it work, though I believe there are some wireless charging bases that have NFC built into them to trigger something on your phone, which is really cool.
Eric Wrye of AndyTags
Eric is the founder of AndyTags and the designer behind all of the tags available on the site. He also has an Android App Video review channel and an app or two on Google Play he created himself.