What is the difference between Digital Vignettes and Toll Stickers / Tickets

Generally, Digital Vignettes and Toll Tickets (or Stickers) are one and the same thing. The difference is that Digital Vignettes are ordered and confirmed online by E-Mail (you do not need to place your Vignette in the windscreen or keep it in your car) while Toll Tickets or Stickers are bought directly in the store (example: gas station) and must be places in the windscreen or kept in the car).