If the security czars had any regard for the people who pay the bills, they would have a mail counter located in the screening area so that any "risky" objects could be mailed to home or destination with a minimum of fuss.
All it would take would be:
- a stock of blister envelopes with marker pens
- a credit/debit card scanner for those without local funds
- maybe a photo copier for those in too much of a hurry to write down their address.
Mind you, this would seriously dent business for the shops at the other end