If you can't find a trading program for you're tablet or cell phone, you can access the program on your computer using either a VPN (Virtual Private Network) or by using TeamViewer. This Android App is currently free from GooglePlay.
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Between computers: https://www.youtube.com/watch?v=Hq_fsdRFWSo&feature=channel&list=UL
For additional protection you can make the connection on your computer to a virtual OS instead of your main OS.