Player identifiers in FiveM

#The identifier types

#Reading identifiers

local license = GetPlayerIdentifierByType(src, 'license')   -- 'license:…' or nil
local discord = GetPlayerIdentifierByType(src, 'discord')

-- all of them as a table keyed by type
local ids = {}
for _, id in ipairs(GetPlayerIdentifiers(src)) do
    local kind = id:match('^(%w+):')
    ids[kind] = id
end

Identifiers are available from playerConnecting onward (with the temporary source), so whitelists and bans can check them before the player loads.

#Which identifier to store

Use license as the account key — every player has one. Frameworks do the same (ESX’s identifier, QBCore’s license column). Store discord as an extra field for staff tools and whitelists, not as the primary key, because it disappears when Discord is closed.

#Identifiers and bans

A new Rockstar account gives a new licence, so bans that check only license are easy to evade. Store every identifier plus the player’s tokens (GetNumPlayerTokens / GetPlayerToken) and match any of them — see ban systems.

#Privacy

IP addresses and account IDs are personal data in many jurisdictions. Store only what you use, restrict who can see it (not every moderator needs IPs), and delete old logs.