Dr. N. Rameshkumar provides safety precautions for using ATMs. Key precautions include: 1) Memorizing your PIN and not disclosing it to anyone; 2) Using well-lit ATMs located within banks or manned locations; 3) Checking for signs of tampering on card readers before using; and 4) Shielding your PIN entry and quickly putting away your receipt, card, and money after transactions.