You cannot process a Mantra fingerprint scanner recharge without knowing your exact serial number. Here is how to find mantra serial number easily:
- Look at the physical white sticker on the bottom of the device. Find 'SR NO'.
- If the sticker is rubbed off, plug the scanner into an Android phone using an OTG adapter.
- Open the official Mantra RD Service app. The app will read the hardware and display your serial number on screen!
Once found, use our portal to execute your Mantra mfs100 rd service recharge instantly.