The US Transportation Security Administration (TSA) has rolled-out new procedures at General Mitchell International Airport (MKE) and Dane County Regional Airport (MSN) for screening large electronics in carry-on bags.

The new rules require passengers to remove all electronic items larger than a mobile phone from all carry-on luggage. They must be placed in separate bins for X-ray scanning.

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Under the new security rules, TSA will place officers at the entrance of every checkpoint to help travellers arrange their carry-on items for screening.

TSA has urged passengers to place large electronics at the top of their bags for easier removal.

“Placing large electronics in a bin with nothing on top or below allows our officers to get a better view of these items and continues to raise the baseline on aviation security.”

Wisconsin TSA federal security director Mark Lendvay said: “TSA continuously enhances and adjusts security screening procedures to stay ahead of evolving threats.

“Removing electronics larger than a cellphone from carry-on bags and placing them in a bin with nothing on top or below allows our officers to get a better view of these items and continues to raise the baseline on aviation security.”

TSA said that there are no changes to what passengers can bring through the checkpoint. Food and liquid items that meet the 3-1-1 liquids rule, electronics, and books will still be allowed in carry-on bags.

Additionally, TSA said that the new security rules do not apply to passengers enrolled in TSA pre-check lanes.