Eye-Fi SD cards have built-in WiFi connectivity that allow you to quickly transfer photos taken on you DSLR or mirrorless camera to a smartphone, tablet or even to online photo services. These cards extend the functionality of non-WiFi enabled cameras and make it possible to have quick back-ups of your images. Eye-Fi's latest product, the Mobi cards, are now available globally. Check it out here, shipping is free for a limited time.