When your BenQ NFC tag is lost, you can buy the BenQ NFC Service Kit for Projector to program the empty NFC tag with tapNshow Writer.
BenQ Corp. is the official developer of the app which can be found in the Tools category. Over 100 users downloaded and set up tapNshow Writer and the latest update was on Apr 23, 2015. This application has the overall rating 4.5 on Google Play.
Download the free setup package of tapNshow Writer 1.105 and have a look at users' reviews on Droid Informer. The app can be launched on Android devices 2.3.3 and above. The app is completely safe for downloading.