How do you deposit a two party check without the other person's presence or signature?

To deposit a two-party check without the other person's presence or signature, you can typically sign the check on the back and write "For Deposit Only" followed by your account number. Then, you can deposit the check through an ATM or mobile banking app, or by mailing it to your bank. Some banks may require additional steps or have specific policies, so it's best to check with your bank beforehand.