A This is probably Enomatic, featured in London wine shop The Sampler, Selfridges and on the International Wine Challenge stand at the London Wine Fair. These self-service devices are made to a number of different designs in Italy. The manufacturer claims the devices keep the wine in top condition and also have self-cleaning spouts.
The idea for wine merchants is that you can charge people to sample the various wines available for tasting, perhaps offering a small discount if they buy a bottle of what they have tried.
For further information about Enomatic, visit enomatic.it