Millions of Indians have been denied access to their pension and other benefits because their thumbprint – fading due to old age – no longer match the impression stored in the Aadhaar database, a Bharatiya Janata Party MP said in Parliament on Friday.

Sushil Kumar Singh, the Lok Sabha MP from Bihar’s Aurangabad constituency, urged the government to take this problem seriously and resolve it soon, PTI reported. He brought up the matter during the Zero Hour of Parliament.

As an example of the difficulty that seniors citizens were facing, he said his mother was forced to get a SIM card in a relative’s name because her fading thumbprint did not match the impression in her Aadhaar details.

Singh also pointed out that deformities that develop in irises create the same trouble with the biometric identification system.