Prisoners at Tihar prisons, located near New Delhi, India, will now be using smart cards instead of paper coupons for their food purchases.

As reported by The Economic Times, the former system of paper food coupons led to misuse and illegal activity within the jail. Some prisoners would use it for currency in order to get banned substances or buy favors from others.

The smart card will hold up to Rs 1,500 per weekly charge and can be used in the canteens for food and personal items. All transactions made with the card will be able to be tracked.

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