I'll leave a book and some unimportant papers -- and maybe my jacket over the seatback, depending upon weather -- to retain my table. The laptop, bag, phone, e

I'll leave a book and some unimportant papers -- and maybe my jacket over the seatback, depending upon weather -- to retain my table. The laptop, bag, phone, etc. go with me to the john. Worst case, I'm out the price of a book and/or jacket. The machine and data remain safe. Even then, I may ask a trustworthy-looking neighbor to keep an eye on my spot. And I return the favor whenever asked. P.S. Leave also a pad or piece of paper with some writing on it, with a pen/pencil on top. People are much less likely to assume the table is abandoned. EDIT: P.P.S. From the more paranoid side: Don't leave an unfinished drink that you intend to finish upon return, especially if you are part of what is considered a target demographic. I would guess incidences are much lower in cafes, but I take this lesson from my family who grew up in much tougher neighborhoods. You don't want someone slipping something into your drink. I learned to get my drink straight from the bartender -- watch him/her open a bottle of beer for you if you really have your doubts -- and don't turn your back on it or leave it unattended. (I guess this could apply to food, as well.)