Your Nexus 5 comes with a pretty cool feature baked in called Android Beam. Using NFC, or Near Field Communication, this functionality allows you to send information to another compatible device by simply touching the two together. Most flagship devices have NFC built into them these days, so there is a broad range of devices that your Nexus 5 is capable of sharing information with wirelessly.
The only drawback to this feature is that it doesn't support many file formats. For the most part, you can share contact info, webpages, and pictures—and that's about it. So in the end, Android Beam... more