A fluent device is a brand character, or a creative concept expressed as a slogan, used as the primary vehicle for drama in multiple ads, without which the ad would make little sense. Fluent devices rely on viewers’ prior knowledge to complete the narrative themselves, which feels good, is memorable and builds positive memory structures.
The pay-off takes patience. Average Star Rating by fluent device tenure:
- No fluent device: 2.6
- Year 1: 2.4, Year 2: 2.6, Year 3: 2.7
- Year 4: 3.5, Year 5: 3.5
Fluent devices grow more powerful with repetition, and by year 4 creative quality skyrockets. M&S’s Christmas Fairy, played by Dawn French, shows a fluent device hitting its prime: its Star Rating rose from 4.6 in 2021 to 5.2 in 2022 and 5.9 in both 2023 and 2024. Other examples include the M&M’s spokescandies and KitKat’s “Have a Break”.