Web Bug?

Hi there guys,
I want to take my advertising efforts a bit further and start using the web bug (Web Beacon Technology). I would like to add it to my customer's stores and start tracking the actions of the potential customers when they leave the store (websites they visit after, etc).

Unfortunately, I was unable to get the information regarding the installation of such service. Please shed some light on me about steps I should take/websites to go.

Thanks a lot and have a great day ahead!

In simpler explanation, this is a hidden pixel that can be used for other purpose.

The idea is simply in your email or webpage, you add in a image link, but in actual fact, it is a script that is executed on the server.
What you can do with this up to your imagination.
e.g.
- knowing the user read the email
- track user event on the webpage

You are not restricted to using an image for this, a javascript embed will do the same job.
Use it properly, google analytics is doing the same thing as well.
If you go to google analytics dashboard, you can even see where is the hotspot of your webpage and google capture that by you allowing the script to be loaded within your page.

However, it is not possible to track where the user is leaving to.
That is call click stream.
You need a plugin/toolbar to be installed on the user to monitor their action in order to do that.
And thus, if no consent is given by the user (to install a plugin), you cannot do it.