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Thread: Buy on board: Experiences and reactions from BA's shorthaul economy service
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Old Jan 12, 2017, 3:12 am
  #160  
scillyisles
 
Join Date: Aug 2014
Posts: 995
Originally Posted by ppp909
Rough calculation (from an IT guy) - I reckon you can store an EC number and an avios balance up to 4 billion (way more than anyone would actually have) easily in 8 bytes of data.
128 GB of RAM is a bit over 134 billion bytes so you could store 17 billion accounts along with their avios balance.

So yes, it's likely that the device stores everyone's cards and balances.
Would be very surprised if the device stored everyones BAEC card details and avios balances as the operational logistics of synchronising the on board devices when avios balances are constantly changing would be immense.
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