Is it possible to use a personal credit card reader to improve credit?

I have good credit but thought just entered my head (maybe it's not a good one.that's why i'm asking).

I have a credit card reader that plugs into and functions thru my iPhone and an app. It's called Square Reader.

I'm wondering if I could take my own credit card, make a purchase/run a charge on it for xxx.xxx of dollars. Then take he money from my checking account and pay it off.in an effort to improve my credit score.

It seems like it would work but I don't know if there's anything wrong with doing that. I may ask my bank if no one here knows for sure.

Your square reader contract doesn't allow you to do this. What you describe is a cash advance and that's not allowed.

9. Restricted Use

Square-provided hardware products are for your use with the Services, and you may not act as a hardware product reseller. You may not act as a payment intermediary, aggregator or service bureau or otherwise resell the Services on behalf of any third party. This means that you may not use the Services to handle, process or transmit funds for any third party. -->>You also may not use the Services to process cash advances. You may not use the invoices feature of the Services to send invoices to yourself or in any other manner for which the invoices feature is not intended.<<

Paying your credit card and other bills on time improves your credit. So does having a low outstanding balance compared to your credit limit. For example if your credit limit is $7500 and you have outstanding installment balance is $5000 your credit score will be lowered. However if your credit limit is $7500 and your outstanding installment balance is $100 your score will be high. Don't try to game the system.

Even if this were not a violation of your square reader contract, it would not improve you credit. It isn't how much your charge on the card, it's the on time payment history that builds credit.

Don't try to play games. Credit card companies have lots of contract specialists and lawyers coming up with the terms. If you can think of it, they likely already have it covered in the contract terms.