Can I create a link or url to a specific item or area of Odoo?

For example, https://myserver.com/web?#id=5&view_type=form&model=account.invoice&invoice.number=1234  would go directly to a view of invoice number 1234. 

The practical reason for this so that I can give my clients an appointment card for their next visit.  The card would have a url embedded in the barcode.  When they return for their next appointment and present their appointment card, the barcode can be scanned and will open up the appropriate area of Odoo. 

Many thanks!

Nate