Owen Fraser of Aberdeen has done the arithmetic the bus companies prefer you not to do. First Bus's weekly pass, purchasable on the vehicle, costs £264 more per year than its monthly pass — available exclusively through the company's smartphone app. The discount isn't a reward for loyalty. It's a penalty for not running the right software. The letter, published in response to the Guardian's reporting on schoolchildren facing higher fares without smartphones, highlights a structural pattern now embedded across UK public transport and retail. Operators design tiered pricing where the cheapest option requires a specific digital platform. Anyone using a non-standard phone OS, an older handset, or no smartphone at all pays a surcharge that is never called a surcharge. Scotland partially sidesteps this for young people: free bus travel for under-22s via a physical national entitlement card. That program demonstrates the problem isn't technical impossibility — it's commercial choice. First Bus could offer monthly passes at ticket machines, on the bus, or via a physical card. It chooses not to, because app downloads generate data, lock in users, and reduce cash-handling costs. The savings accrue to the operator; the costs fall on passengers who can't or won't comply. The pattern extends well beyond transport. Fraser notes supermarket loyalty schemes migrating entirely to apps, eliminating physical cards that served the same function. Tesco Clubcard, Sainsbury's Nectar, and others now route meaningful price differences — sometimes 30-50% on individual items — through app-only channels. The common thread: services that once operated on universal infrastructure (cash, plastic cards, paper tickets) now gate their best prices behind platform-specific software controlled by two companies — Apple and Google. This creates a quiet but real two-tier pricing system indexed not to income or need, but to digital compliance. The elderly, privacy-conscious users, people with older devices, and those in areas with poor connectivity all pay more. None of these groups chose to be on the wrong side of this divide. The divide was constructed around them. Fraser's £264 annual penalty is individually manageable but structurally telling. It reveals who public transport is being optimized for: not the public, but the operator's data pipeline. When the cheapest ticket requires surrendering location data, usage patterns, and platform dependency to a private company, the transport network has quietly been repurposed as a data-harvesting operation with buses attached. The cost-of-living context sharpens the point. At a moment when government policy nominally aims to reduce transport costs and encourage bus use, operators are simultaneously building pricing structures that punish the least digitally equipped passengers — who are disproportionately the poorest and oldest. The question Fraser poses is not about convenience. It's about whether access to public infrastructure should depend on which operating system you run.