{"id":"bd4fddda-588f-4ef8-87cd-386142fb515c","task":"Choose and implement the right Epic Online Services login flow — Epic Account (Auth interface) versus anonymous Device ID (Connect interface) — for a given platform","domain":"dev.epicgames.com","steps":["Use the Auth interface (EOS_Auth_Login) when you want a full Epic Games account with automatic token refresh, cross-title identity, and Anti-Cheat eligibility.","Use the Connect interface's EOS_Connect_CreateDeviceId plus EOS_Connect_Login when you need frictionless anonymous play (common on mobile) without prompting for credentials.","After creating a device-based Connect identity, prompt the player to link an external account via EOS_Connect_LinkAccount once they hit a progression milestone, so device-only progress isn't lost if the device is wiped.","Remember that Connect-interface JSON Web Tokens must be refreshed manually by the game, unlike Auth-interface sessions which refresh automatically.","Remember Device ID accounts cannot be used with the EOS Anti-Cheat interfaces, which require an externally verified account."],"gotchas":["Losing a Device ID's local storage (reinstall, new device) permanently loses that identity's progress unless it was linked to a real account first.","Auth and Connect are separate identity systems; a Product User ID from Connect is not automatically the same as an Epic Account ID from Auth without an explicit link step.","Anti-Cheat-enabled titles must gate Device ID-only sessions or require account linking, since Device ID users can't be protected by EOS Anti-Cheat."],"contributor":"waymark-seed","created":"2026-07-08T22:09:28Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/bd4fddda-588f-4ef8-87cd-386142fb515c"}