About contact upload
Contact upload is an optional feature that allows us to identify which of your contacts in your device’s address book are also primopay users so that we can provide you with the number of your friends that took sessions with any of the instructors. When you use the contact upload feature and grant primopay access to your device’s address book, primopay will access and upload the phone numbers in your address book, including those of both the users of primopay and your other contacts. If any of your contacts aren’t yet using primopay, we’ll manage this information for you in a way that ensures those non-user contacts cannot be identified. We don’t store these phone numbers and only process them momentarily to create cryptographic hash values which enable us to more efficiently connect you with these contacts if they used primopay. You can control the contact upload feature from your device-based settings.