Why Do DVDs Have Region Codes?

DVDs (and Blu-Rays), and their players, are region-locked, meaning that you can't play discs coded for a different region on your region-locked player, but why?

Why You Should Avoid Scanning An Unknown QR Code

QR codes can act as a convenient shortcut but, in the right hands, it can also be a tool for scammers. Here's why you should avoid scanning unknown QR codes.

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Smart city, sacred city: How Varanasi is reimagining crowd flow

Like endless waves of Ganga flowing by the ghats, so people flock to Varanasi’s spiritual zones with unwavering commitment.