Rules and regulations concerning the use of GPS and GSM tracking devices are constantly changing and to answer this question accurately, you would have to contact your local travel agency to find out if your destination (and all those in between) allow tracking devices to be placed in luggage. At the moment, GSM communications are not accepted by North Korea and Japan. Some airports also have strict rules with regard to devices that emit signals and might confiscate the item if they do discover it in your bag. It’s best to seek advice from the airports you are flying to and ask them for more assistance on this matter.\r