That is not entirely true. Actually, it depends which country you are talking about. For example, we can't send passports to Pakistan through couriers but it is possible through embassy only. In case of UK, there is no issue to send passports through couriers and it is completely legal. FSW applicants from most of the middle east countries are sending their passports to London Visa Office in UK through courier. You can call any well known courier to check if you can send passport to certain country or not.
Javiya said:Hi Kara, As far as I know, Its not legal to send your passport out of country for any purpose. Unless it is sent by embassy themselves.
So i do not think we can send our passport for PR visa during visit to other country.