hello and welcome to the week in tech. it was the week that chinese smartphone companies oneplus and oppo merged. amazon opened its fifth convenience store of just walk out shopping in london s chalk farm neighbourhood. and twitter is testing out an unmention button, asking users for feedback on the feature. it would allow a user to edit themselves out of unwanted conversations. it was also the week that an autonomous artificially intelligent ship set sail across the atlantic. the mayflower has no crew on board and is retracing the 400 year old pilgrim route from plymouth in the uk to massachusetts in the us. the ship will carry out experiments on the way, collecting data on sea life and looking for plastic waste. the winner of the davidson prize, a new contest for smart designs to adapt homes in the era of at home working, was given to homeforest. the app connects with smart devices to transform the home into a forest bathing experience, replicating the feeling of walking in nature.