Several countries worldwide require users of handheld radios and satellite phones to have permits, however; advise travelers that restrictions might exist at their destination, and to learn what they are before departing.
An emergency satellite communication device is an excellent tool to carry. This device can synch with a mobile phone to send routine and emergency messages, usually via text. Where cellular phone service is not available, travelers might consider an unlocked (no frequency restrictions) VHF/UHF radio or a satellite phone. Several countries worldwide require users of handheld radios and satellite phones to have permits, however; advise travelers that restrictions might exist at their destination, and to learn what they are before departing.