"The modern form factor is that of the mobile phone: a fat oblong. You can have two of these per pocket and a handful of change. It fits in the palm, and comfortably in any pocket you're likely to have. There are pockets made in suits for exactly this size. New cameras are this size. You could probably sell a change of underwear and some breathmints in a disposable package this size. When we have glue devices - to plug into tvs to play games and see photos, to provide connectivity to a group, to play adhoc karaoke - they aspire to this size. What else?"I see these mobile-form pockets in all sorts of places, normally empty, or (like two people I saw on the tube today) packed with tissues or sweets. I don't use the one on my bag, because it is uselessly placed between the strap and me. Outdoors, I need my phone against me so I feel it vibrate, and because I don't want the ringer on loud (it's rude). The custom pockets often have zippers and velcro, making them too inaccessible. So trouser pocket it is.
My new Rio Carbon is wedge-shaped, so it can be the last thing to go in my pocket. The scroll wheel can remain unlocked, so if I get the pocket arrangement right, I can change volume without looking. This wouldn't be the case with a custom fancy zippered pocket.
My pockets have holes in too, especially since I now have to carry four front door keys. Any solutions out there for a pocket-friendly key ring?