India, July 28 -- After years of travelling for work and family holidays, I have stopped packing gadgets just because they seem useful. Every item in my bag has to earn its place by solving a real problem. Some help me stay productive, others keep me comfortable during long days of sightseeing, while a few simply make travel a lot more enjoyable. From getting ready for an interview minutes before it began to surviving Singapore's relentless heat with two children in tow, these devices have proved their worth time and again. Here are five tried and tested tech essentials that I refuse to leave behind every time I pack my bags.

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