You will have to put your shoes, clear plastic bag of liquids, jacket, jewelry, cell phone, keys, and metal items into a bin for screening before you step through the metal detector or the full body scanning machine. (If you opt out of the full body scan, you will face an “enhanced” pat-down, which is performed by a security officer of your gender and covers all areas of the body, including the groin, buttocks, and breasts.) You might also need to remove your belt if it has any metal parts. (Consider a belt with a plastic buckle to avoid this.) Laptops, tablets, and other electronics larger than a cell phone should be removed from their cases and screened individually.
Save time by putting metal items into your carry-on before you get to the checkpoint, taking your electronic items out of their cases and wearing easily removable footwear.