A Placement can be thought of simply as a unique QR Code.
All Campaigns have a default Placement (QR Code), and for most situations that is all you will ever need.
In larger, more advanced Campaigns, it is useful to be able to track and subdivide your Campaign traffic. Placements give you a lot of flexibility in this.
Generate a different Placement for each physical location you are "placing" a QR code. This allows you to identify exactly where (geographically) your scans are coming from.
A good example where this is useful would be a billboard campaign - you can tell exactly which billboards are drawing the most attention to your product or service.
For Advertisers who run campaigns across multiple media channels, SnapTag's Placement-tracking feature allows you to measure traffic from each channel.
Simply create a new Placement for each specific source you want to track separately, and use that Placement code only for the Ad you place in that publication.