ATM

• For another person to make a deposit into your checking account from an ATM, she will need your ATM and PIN. From there, it's simply a matter of going through the prompts and inserting a check or cash when prompted to. ATMs have no way of verifying who is making the deposit, so you should have no problem.
  
  

Teller

• To deposit money with a teller in the bank, the person will need a deposit slip to go along with the cash or check. The easiest way to do this is to give the person one of the deposit slips from your checkbook, but if the person knows your bank account number, she can use one of the available deposit slips within the bank.
  
  

Bank Policies

• Most banks will not ask for ID when making a deposit, so the teller may not even know that it's not the account holder making the deposit. You may find, though, that a bank has policies against letting others deposit money into the account, especially if the person doesn't know the account number and address. If you're not sure, ask your bank about its policies.
  
  

Potential Dangers

• In order for someone to make a deposit on your behalf, you have to give them sensitive information, such as an PIN code or bank account number. Knowing these numbers, a dishonest person could attempt to take money from your account. You should only allow someone you trust completely -- a family member or spouse -- to make deposits for you.