I believe they're being phased out everywhere now but historically debit cards were something like Maestro, "Visa Electron", EC Card, Girocard, etc. Maybe the G

I believe they're being phased out everywhere now but historically debit cards were something like Maestro, "Visa Electron", EC Card, Girocard, etc. Maybe the GP is still somewhere where those are still in use. I believe Germany is one of the big laggards in this space.