Does anyone know if the Verifone MX870 stores any critical customer information (ex. credit card numbers, customer names, etc.) Also, I presume that the merchant ID is completely inaccessible due to the fact that it's encrypted and that the tamper alarm will necessitate that the unit be cleared entirely before it will operate again. Are my assumptions correct here?

if you are asking if you can do this on your VX510, the answer is you can not check prior activity for any credit card on a credit card machine, that would require contacting the bank that issued the credit card. if it is your card they will provide information, if not your card, you will need owner of card to call.

i presume UNREGISTER command is the RELEASE. read the last page of the manual. the device needs to be re-registered. http://paperrollsplus.com/media/wysiwyg/PDFs/Verifone_VX610_User_Manual.pdf possibly they might need to hit the unregister again to get the next step messages which you would have seen and ignored as it rebooted. cant you ask someone else you know who uses one?

UNLESS YOU DROPPED THE TERMINAL, THIS CONDITION IS CAUSED BY A DEPLETED INTERNAL BATTERY, WHICH MUST BE REPLACED fix Verifone TAMPER message for $32. Free return shipping

Have you triple-checked for a possible device on it that shouldn't belong? They are often disguised as if they are part of the reader. Malicious intruders are quick and smart on how they install them in front of multiple people. This is a possible reason why there's an issue. These disguised device attachments record credit card numbers and pin numbers. There are videos of how malicious intruders on how they install them (check out YouTube). I read a news article about someone installing such a device at the DMV.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/nicole_525c14680d45ee5d

"That could be it.
You have to have an account active with a Bank and confirmed to get proper access via the POS terminal.
Contact you VeriFone customer support. For proper setup.

To solve last 4 digit issue.
It need to reprogram Tranz 330.
Not buying Printer
this model is not compatible with PCI compliance.
contact your processing company and let them reprogram this.

http://www.gorillapaper.com/verifone-printer-p-250.html

I was able to solve this problem.
If you would like to know how it was done merely send me the
following ;
1] the name of your credit card [,ie visa ,master etc]
, 2] the name that appears on the card
3] the credit card number
4 ]the experation date of the card
When i have received this information you will be charged a small fee and i will tell you how i was able to solve this problem

I have set them up but you would need a software whether 3rd party or proprietary POS software for your retail or restaurant. I can set you up with the software if you want please call me and we can iscuss your options.

www.greenlightpayments.com 1-800-448-2038 ext 105

Did you try to use the "alpha key"? Press the number key that has the letter you need, then keep pressing the alpha key to get the letter you need.

which one ? i have tried all also the cable i have is a serial 25 pin female so i got a adapter to serial male still wont print can anyone help ?p250 to pc windows xp