Hi,

Im building a software that would evenutally let you input your payment details, check with the server, and then let you in, use the app.

Im not quite sure how to do it, add some ip check or something like that, so that i person cannot use the same payment details with other ip's , or using the app if another user is using it with the same payment info.

Im using vb6....so i would need a sql database for that or something?


Please advise


Cheers!