This is informative and helpful article.
Here only lockable luggage is accepted.
What about zipper bags without lockable luggage?
How to sort this out :
wither with IR
or...
more...
Modify the luggage so that there are sufficient security by way of lock...
In some religious places , visitors are asked to keep their shoes in shoe racks. But few places have made it more advanced...
They put 'shoes, be it one pair or more than one, in a plastic bag and tie the string around the mouth of bag, and tie a token , other token is given to visitor for getting back on return...