SidelineSwap uses Payoneer to process bank transfers securely. You can read more about Payoneer here. Payoneer is certified to PCI Service Provider Level 1. This is the most stringent level of certification available.
SidelineSwap, in partnership with Payoneer, requires that all "account representatives" be 18 or older. Any seller under 18 will have to submit a Photo ID of their legal guardian or parent to SidelineSwap Support before they can cash their balance out.
Note: If a minor requests to open a checking, savings, or money market savings account and their age is 14 - 17, then a parent or legal guardian MUST be named as a joint account holder, and all associated services are available to the minor.