Just another WordPress.com weblog 4G EYE-FI SD card I've been watching these puppies since they originally hit the market. The idea behind them was good and only getting better as tethering has become common place on today's smart phones. I was wandering through Blacks and asked if they had one and not only did they, they were clearing it out so it was uber cheap. $18 instead of $40. This is a standard size SD card that you put in your camera. It has three modes. It is a standard SD card with (in this case) 4G of memory. There are also 8G and 16G cards as well. If this was all it had it would be a yawn. The card is advertised as a class 6 card. It tested out at 11MB/s write and 16MB/s read. Well above a class 6. More like class 10! It has built in WIFI. It's amazing what they can fit into this small form factor. In it's second mode it can connect to WIFI access points that you define to the card by plugging it into a PC or MAC and configure it. It even comes with a usb card reader. Of course you need to do this in advance or carry a PC or Mac with you. I had issues with the PC version of the program. The resolution of the program was something odd and it kept hiding things off screen. It doesn't properly support maximize, window resize or have any