Indian Railways, SBI tie-up to install 10000 POS machines at various locations The Indian Railways on 13 December 2016 tied-up with the State Bank of India (SBI) to install at least 10000 Point of Sale (POS) machines using debit or credit cards at the Public Reservation System (PRS) counters of Railways.This tie-up was undertaken to promote Prime Minister Narendra Modi's decision to promote