A lot of folks seem to think that only the OmniPod is certified to go through an airport x-ray machine or a backscatter body scanner. But according to the t:slim user guide:
"Radiology and Medical Procedures
If you are going to have an X-ray, computerized tomography (CAT) scan, magnetic resonance imaging (MRI), or other exposure to radiation, take off your t:slim Pump and remove it from the procedure room. If you have questions, contact Tandem Diabetes Care Customer Technical Support at 1-877-801-6901. Your t:slim Pump, however, has been designed to withstand common electromagnetic interference, including airport and department store security systems. Refer to Electromagnetic Compatibility in section 19.5 for more detailed information."
Tandem seems to be confident that their pumps can handle all security systems, which is interesting because it seems to contrast with a number of other companies, who will actually replace pumps if the user ends up taking them through an x-ray.
P.S. I wasn't sure how to share this with the t:slim group to which I subscribe, I'm new on here and as best I can tell, the forum is separate from the groups, i.e. the groups seem to just be email lists while the forum is, well, a forum. Not sure if that's right, though.