Actually, the Railways is upgrading the POS (Point of Sale - POS) machine with TT and is now installing 4G SIM in it.Let us tell you that before this, only 2G SIM machines were available with TT.According to the Railways, 4G SIM has been installed in more than 36 thousand machines across the country so far.Its purpose is to make passengers cashless by using such machines in the form of fines or digital payment of extra fare (card payment) from railway passengers.This facility can be given to them.Copyright © 2022 Jagran Prakashan Limited.