Anyone who enter from Austria to Liechtenstein, is controlled by the Swiss border guard. This is regulated in a tariff agreement with Liechtenstein from 1923. Swiss customs at the EU external border in the Principality of Liechtenstein, Feb 16, 2015.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/70981241@N00">Kecko</a> from Northeast corner of, Switzerland
CC BY 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/kecko/16561205621/">Schaanwald - Swiss Customs</a>