<prompt> Human: Out of good intentions, my dad just called me and let me know he added me as a user to his credit card account. He wanted to help me out with my credit history age, but even with the low age Ive got a 760. Which is fine for where Im at.As the title says, if I leave it alone with this affect me in any way? Say he misses a payment or something.  <response>: If he misses a payment, it will ding you. However, you can always call the credit card company and ask to be removed as his authorized user. That will remove the card from your report with its history and missed payments entirely. Like it was never there.So when it is an old card with an impeccable payment history, it will help you. When it no longer meets those qualifications, you can remove it! 