PrivateStorage.io's forthcoming commercial deployment of Tahoe-LAFS will utilize a Privacy Pass-based token scheme for the purposes of anonymized lease-renewal and access-control called "Secure Access Tokens" (or "SAT"s)

In preparation for the PrivateStorage.io public launch, Gridsync should provide the basic features necessary to connect to and use SAT-based grid-connections, including (but probably not limited to): bootstrapping a SAT-based "subscription" via magic-wormhole and configuring a SAT-aware tahoe daemon, displaying graphical indicators relating to SAT consumption and availability, and delivering appropriate alerts/notifications pertaining to SAT-related events (such as low token warnings, lease-expiry/renewal messages, etc.).