Facebook's facial recognition feature probably won't find too many smiles in Germany, where federal regulators are challenging the social network to change its ways, or face the consequences. On Tuesday, Hamburg's Data Protection Authority (DPA) sent a letter to the company, advising it to obtain user permission before harvesting biometric data, as outlined by EU privacy laws that require consumer consent. As it stands right now, users can opt-out of the photo-tagging function by tinkering with their privacy settings, but
