Why is my card "unreadable?

Credit card bin numbers and BIN Database are very essential to ensure the security of card detail and bank account information. It is no doubt that credit or debit cards are top of peoples choice as digital banking medium. Credit or debit card enables a very easy withdrawal method via ATM, easy shopping compatibility and for online debit cards are the most reliable payment method.

As online shopping vastly deals with credit cards or debit cards, ***** activities are often seen to be done using fake and invalid card numbers. These events are random occurrence at many business sites and instant action against them is a must. One way to stop this crime is to be able to track whether a card is valid or invalid. That can be done using its bin number.

There is a method called "Luhn System" by which you can check card number validity. It's a mathematical algorithm where various combinations of numbers must add up to a number ending in 0. If the total of the combinations adds up to anything other than a multiple of 10, the card is invalid.

usually a phone number to call --or use it in an atm --or notify bank

no
fixya site doesn't have ATM machines
banks do so ring the emergency number on the ATM

https://www.google.co.uk/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=I+want+to+register+my+new+USAA+VISA+card .
How do I activate my USAA debit card? Click to Show. Step 1: Log on to usaa.com and go to the My Accounts page. Step 2: Click the "I Want To..." drop-down menu beside the checking or savings account you want to activate. Then select "Activate Debit Card."

Activate a Bank Card - USAA ' Frequently Asked

https://www.usaa.com/inet/wc/faq_BankWS_Bank_Card_Activation_BankFaqL1_indexSearch for: How do I activate my USAA debit card?.
This is all i could find not sure if this is what you are looking for.
if not let me no.

No, it is not possible. Since the records is with your bank - the other bank ATM will not accept this option. Therefore, you cannot use other bank ATM to change the pin. Even when you receive the debit card first time, you have to activate your card in the ATM of your bank only initially and not with another bank ATM

You should be able to call into the number on the back of your card and it should walk you through your account.

Call the Wells Fargo Phone BankSM at 1-800-TO-WELLS (1-800-869-3557) to report your card as lost or stolen and request a replacement card.
If you lose your card while traveling outside the United States:
Call us collect at 1-925-825-7600 and then follow the voice instructions.
Your Wells Fargo Debit Card comes with Zero Liability protection at no extra cost, so you won't be held liable for any unauthorized transactions, as long as they are reported promptly.1
ATM and Debit Card Questions

Just call your bank and let them know you will be in the UK so they don't flag your card as stolen. You can use normal debit cards in most places including ATM's, however they will usually charge a few dollars to withdraw.

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Only the issuing bank can block a card. You need to call the bank.