There are some really small wifi adapters out there. E.g:Unfortunately they are not very powerful and your internal laptop wireless adapter would be able to pick up more networks. One of the big issues for this is no antenna. This kit is designed to reach networks around you from a central location without raising too many suspicions. It isn't quite as small as the picture above, but it will be much more powerful than your internal card.Adapter: GMYLE (RTL8191SU) with 5dBi Antenna 300Mbps- Login or Signup to view links / downloads $13 USD(currency converter left side, bottom bar)Login or Signup to view links / downloads Price is an estimation only and does not take into account postage. You can find out more (e.g. price, specs, reviews) by clicking the 'Buy from Amazon' links to buy individually or view the entire kit by clicking 'Buy Kit'