B Surya Teja, a final year B-Tech student, had made purchases of at least Rs 14,210, online and at malls, police said.
CCTV footage at a shopping mall showed the accused making purchases, police said.
Police tracked him down by tracing IP address of a computer used by him to an Internet cafe.
According to police he was already facing three similar cases.
Teja allegedly could memorise the details of debit cards used at ATMs at a glance, and used these details for online shopping. Further probe is on.