I came across this sentence:
"They are only distributed in the U.S. Payment occurs in a similar fashion to mag-stripe, without a PIN and often in off-line mode..."
On reading the first time, I got confused by "U.S. Payment." It seemed to be the name of an organization, but the subsequent words were out of place. So I re-read and realized that "Payment" was the start of a new sentence.
Is there a way to disambiguate the period at the end of "U.S." so it is immediately obvious that the sentence has ended, or do we have to rely on context ?