As others mentioned, this is backed by the "open" standard FedCM. While this seems like an open play on the surface (and the standard is open), in practice this is a highly anti-competitive and will just lead to Google…
As others mentioned, this is backed by the "open" standard FedCM. While this seems like an open play on the surface (and the standard is open), in practice this is a highly anti-competitive and will just lead to Google…