Can I add an account that isn't mine to use on my device when I work for their business?

[debfraker]

I have my own business account set up with a square app on my iphone. I'll be working for another business this weekend and need to take square charges for their account. Can I do this through my existing Square account?

[RHatch]

You will have to just log out of your account and log in with either a device code or different user id.