An install's no-valid-map pair: two numbers of the app's shape (four printable ASCII bytes, little-endian), seeded by the install's device id so one install always reports the same pair.
no-valid-map
An install's
no-valid-mappair: two numbers of the app's shape (four printable ASCII bytes, little-endian), seeded by the install's device id so one install always reports the same pair.