It uses hardware with a secure element only permitting 20 attempts. The past 5 unique attempts are rejected early out for usability. We published a technical o

It uses hardware with a secure element only permitting 20 attempts. The past 5 unique attempts are rejected early out for usability. We published a technical overview of how GrapheneOS protects against data extraction covering the major protections it adds: https://discuss.grapheneos.org/d/40700-grapheneos-protections-against-data-extraction-from-locked-devices https://discuss.grapheneos.org/d/40700-grapheneos-protection...