The Difference in Rapture was the highly-automated nature of ITS Pneumo System. Typical Rapture Kiosks : Real World Pneumatic Mail System Stuff : Unfortunately even if it 'looked neat' to have letters and things whizzing through the tubes (seen in BS2), it really cannot work that way, and a canister more like the (Minervas Den) "Air-tite Archives" systems HAS to be used to transport things. The thing shown in the Infinite BS DLC (TVs with lil T-rex arms was just a bit to F@#ked up ... but I supposed it 'Looked Neat' to those last remaining designers and artists). . . . .