Soh Kam Yung"Last week Heathrow completed a massive security upgrade that allows travelers to keep their electronics in their bags and to carry liquids in containers with a volume of up to two liters, far more than the long standard limit of 100 milliliters. Thank technology: better imaging and software have pushed checkpoints from two-dimensional x-rays to computed tomography (CT) scanners that build a three-dimensional model of your bag."
https://www.scientificamerican.com/article/how-new-ct-scanners-ended-heathrow-100ml-liquids-rule/
