I'm looking for a book I read during the last 5 years, I guess, but it could be really old. I read it in French, but it's probably a translation from English (or another language). I thought it was in Down and Out in the Magical Kingdom by Cory Doctorow, but it's not.
It's a sci-fi book set in the near future, where many technologies help Humanity.
One of these inventions is a device (I think it's a sort of watch) that reassures its owner about his actions. The owner can ask: "What would happened if I didn't do something?" and the device says quite every time "You'd be dead", sometimes with details: "You'd be dead, hit by a bus on Main Street". Possibly even absurd deaths, like "You'd be dead, eaten by thousands of koalas" (this is not an actual example).
The device is used to reassure the owner. We don't know if it says the truth, or if it's just for comforting the owner in his actions. Many people have one.
This device is not a part of the plot, just an intriguing detail in this sci-fi world, among others (that I can't remember yet) .
A love story is probably a part of the plot. Some impossible love? Can't remember. I think there was also something involving genetically modified wolves, with a sort of "little red riding hood" vibe at a point of the story (even if the story, as I remember, was set in cities).