passport
A passport claims to be the universal proof of identity abroad, but in reality is nothing more than an IOU of freedom granted at a nation's discretion. Applicants face ritualized ordeals at consulates, and once obtained, the document becomes a time bomb with an expiration date. Yet people pay for this piece of paper to secure a fragile peace of mind before stepping into unknown lands. In the end, it is a mirror reflecting the irony that travel liberty depends on the whims of states.