I have a "TSA Friendly" laptop bag (it even has a stitched on label). The laptop pocket unzips to the bottom of the compartment and folds along the bottom, so

I have a "TSA Friendly" laptop bag (it even has a stitched on label). The laptop pocket unzips to the bottom of the compartment and folds along the bottom, so the laptop is still in its pocket, but there is nothing but fabric and foam between it and the belt. The metal parts of the bag as well as anything else metal I might be carrying are all folded to he other side and don't shield (electromagnetically) the laptop.