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Most systems that attempt to implement one time pads are just stream ciphers built from crappy random number generators; they're crappier versions of RC4. Real one time pads aren't particularly useful (which is why they're rarely used): they require keys as long as their plaintexts.

Schneier calls them "pretty much useless": http://www.schneier.com/crypto-gram-0210.html#7

They are, at any rate, a sturdy indicator of snake oil crypto.

If you are an organisation with deep pockets (nation state) and are willing to send trusted (armed, diplomatic) couriers to every end point you want to talk securely with (embassies) every month then it can be secure but it will definitely be expensive.

Unfortunately it is difficult for the receiver to know the key. I don't know how this would be solved, but it's quite the conundrum.