If you're travelling and you need a key document, such as the latest draft of your business plan or the presentation your colleagues have just finished, there are many ways you can get it: email, iDisk and online file services such as SendThisFile or YouSendlt. But if the document you need is extremely confidential, you may not want to trust any of those file-transferring tools, because they aren't secure; if someone really wanted to, he or she could probably intercept and open the file somewhere along the line. There are several alternatives, however, and most of them are quite simple.
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