You can trade anywhere that is comfortable and has an internet connection, whether it's in your home, office or in transit. What matters is if you're in a conducive environment where there's no distractions. As somebody mentioned on this thread if you're traveling outside your country you need to understand whether your exchange is enabled in that country or region. Internet based jobs are becoming very popular because you don't have to be restricted in an office to do your job, anywhere you are you can connect to the world with ease and convince.