You can open/close with the FOB. You cannot open/close with your foot. This option was available on the 3 series wagon we tested before deciding on the X3, and I was disappointed when I learned it was unavailable on the X3. I'm actually generally unimpressed with CA on this vehicle, as I can't open the rear passenger doors either- I have to unlock all doors from the front or use the fob, which is not very convenient when holding a car seat with a baby in it in one hand and a briefcase or something else in the other and you have to set it all down to dig around for the fob instead of just setting down the briefcase to open the door.
Oh well...if the 1st world problems I have with comfort access are the only issues I have with the X3, I'd say I'm in pretty good shape.
2001 BMW 330Ci (sold...miss it terribly)
2006 BMW 325i
2014 BMW X3 xDrive35i