Mobile Processing Aggregators (Less freedom & security, but greater simplicity)

These providers like Square and PayPal, don’t set you up with your own merchant account. Instead, they provide a stand-alone mobile service, usually with a pay-as-you-go pricing structure.

They basically pool a whole bunch of merchants together into one big account, with each merchant tracked individually within this aggregation.

To qualify to perform this service, a PSP and their acquirer must meet several different standards and follow a variety of rules set by the credit card networks, since these types of accounts are extremely susceptible to fraud (very high risk).