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Think of bedtime and you may think of a story and glass of milk, but one company aims to pull the ritual of parents tucking their children in to modern times.
The Idaho-based creators have created pyjama sets for boys or girls which have printed polka-dot patterns that respond to smartphones in the same way as QR codes. If a parent scans the dots with their smartphone, stories "unlock" complete with pictures and audio.
Pyjama sets retail for $25.