“Why do Swedish warships have barcodes?”/“So when they dock they can Scandinavian.”

A pun about barcodes is:
 
Q: Why do Swedish warships have barcodes?
A: So when they dock they can Scandinavian (scan the navy in).
     
The joke was posted on Twitter by Julian Lee‏ @thisisshaft on March 13, 2012 and again by Julian Lee‏ @JulianLeeComedy on September 11, 2014.
 
 
Wikipedia: Barcode
A barcode is an optical, machine-readable, representation of data; the data usually describes something about the object that carries the barcode. Originally barcodes systematically represented data by varying the widths and spacings of parallel lines, and may be referred to as linear or one-dimensional (1D). Later two-dimensional (2D) codes were developed, using rectangles, dots, hexagons and other geometric patterns in two dimensions, usually called barcodes although they do not use bars as such. Barcodes were initially scanned by special optical scanners called barcode readers. Later applications software became available for devices that could read images, such as smartphones with cameras.
     
Twitter
Julian Lee‏
@thisisshaft
Replying to @qikipedia
@qikipedia Why do they put bar codes on the returning Swedish fleet? Scandinavian.
6:21 AM - 13 Mar 2012
 
Twitter
Julian Lee‏
@JulianLeeComedy
#dailypun #Europe
Why do they have bar codes on the returning Swedish fleet?
So they can Scandinavian.
6:51 AM - 11 Sep 2014
 
Twitter
Alastair Cummins‏
@AlastairCummins
Why do Swedish warships have bar codes on the sides?
So that when they return to port, they can Scandinavian.
10:19 AM - 2 Jul 2015 from South West, England
 
Twitter
alan crosbie‏
@alancrosbie1
Why do the Norwegian navy have barcodes on their warships? So when they return to port they can Scandinavian
5:47 PM - 11 Jul 2015
 
Reddit—Dad Jokes
The Royal Norwegian Navy decided to put bar codes on all of their ships. (self.dadjokes)
submitted December 14, 2016 by OreoGaborio
Now they can Scandinavian.
 
Metro (UK)
It’s UK Punday so let’s celebrate the puntastic world of puns
Charles White for Metro.co.ukMonday 13 Feb 2017 6:11 pm
Geordie Julian, 49, boasted of having more than 400 people favourite this Swedish themed pun on Twitter.
 
He said: ‘Why do they have barcodes on the returning Swedish fleet? So they can Scan-the-navy-in.’
   
Reddit—Jokes
Why do they have bar codes on the returning Swedish fleet?
submitted February 13, 2017 by InQuietDesperation
So they can Scandinavian.
 
Reddit—Jokes
Why do Swedish warships have barcodes on them?
submitted July 9, 2017 by mcbogart
So when they dock they can Scandinavian.