Just how fast are your tech products depreciating – and which ones are holding their value, Norton has launched new internet security software with Identity Theft Insurance and facial recognition technology is being used in some Australian retail store – should we be worried, Huawei has released four new wearables including a blood pressure monitor, Sony’s new in-car AV receivers offer wireless Apple CarPlay and Android Auto and LG has entered the laptop market with its latest Gram range and we’ll answer all your questions in the Tech Guide Help Desk.