A casual peace sign in a selfie has become China’s latest online privacy concern after experts warned that the popular pose could expose users’ fingerprints. In a mainland workplace reality show aired in April, financial expert Li Chang used a celebrity selfie to show how clearly visible fingers in a photograph could put personal biometric data at risk. Li said fingerprints could potentially be extracted from selfies taken within 1.5 metres if the fingers faced the camera directly. Even at a...