We've had no trouble taking a BG meter through the scanner. If you're travelling with insulin have a doctor's letter with you to confirm that you are diabetic and insulin dependent. Always carry the insulin, test meter, your own snacks etc with you in your hand luggage incase of delays or lost luggage. Make sure you have a spare of everything if you're going away on holiday, batteries for the test meter, insulin, test meter, test strips, novopen etc. When we've travelled my husband has one set of the diabetic "stuff" and I carry the other set, that way if one of us loses our hand luggage we have the other set as backup.