What is this MAX system for boarding planes and trains and how will it work?

I couldn't find reliable information about a boarding system called MAX for transportation. It's possible you're referring to some regional or recently announced project, or the name might be different - could you clarify where you heard about it or what exactly they're promising to improve in the boarding process? Without more details, it's hard to figure out how this would change airports and train stations.

It might be some internal airport or Russian Railways system they use to manage passenger flow, but I haven't come across anything publicly called MAX. If you heard it from someone you know or saw it in some specific source, it'd be worth clarifying the context - it could be an acronym for something local or a project in early discussion stages. At least, I haven't noticed any widespread rollout of such a system by 2026.