If you take it & keep it you transgress 2 lavin , what is it ?
A. Something you find which you are obligated to return.
The 2 lavin are - don't refrain from returning it & don't steal.
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Q. What if you return an item to a place where the owner will see it & find it is that sufficent ?
A. Yes
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Q. Is a pickpocket in a public area considered a Kanov - sneak theif or is he a gazlon ?
A. He is a ganov , because he is concealed from the owner. Rambam
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