Social media has become so proliferate that users now take photos of everyday things like their morning cup of coffee, or their shoes while waiting at the bus stop.
And while you may be tempted to post a photo of your same-sex marriage ballot paper on social media, the Australian Bureau of Statistics (ABS), which is conducting the survey, is warning people against it.
According to Fairfax Media, the ABS says putting pictures of your survey form online may reveal your unique barcode, and put your vote at risk of having someone duplicate it and steal it.
The barcode can be seen in the bottom right corner of the ballot paper.
As the postal surveys begin to arrive in Australian mailboxes, the ABS has reminded people that an individual ballot paper will only be counted once, and so all voting Australians should keep their paper private in order to protect its security.
NOW WATCH: Briefing videos
Business Insider Emails & Alerts
Site highlights each day to your inbox.