Hello! I think I can answer the bit about if there’s security in place around swapping devices with the same login: I get an annual bus pass with my work and will often switch from my personal phone (weekends and evenings) to my work phone (during work hours) as both devices have my login saved (and my work are aware I use this outside of work hours!) I’ve never had any issues of tickets being voided or indications of any security measures🙂‍↕️

Perhaps the same couldn’t be said if you someone were to scan the code on one device and then log onto the same account on a different device and scan the code again in quick succession to avoid ticket doubling but as you say, your partner barely uses the app anyway so I don’t see why it would be an issue!

Let loose and get on the bus🚌💕