If you're fairly new to Pokémon like me, chances are you keep coming across new wild Pokémon and not being sure what "type" they are.
Sure, you can generally work it out pretty quickly from the type of attacks they use -- or by catching them and adding them to your Pokédex, of course -- but sometimes you come face to face with another trainer with high-level Pokémon, and you need to know the most efficient means to take them down. What to do then?
Well, if you happen to have an iOS device in your pocket, all you have to do is hold down your Home button to call up the OS' personal assistant Siri, then ask it what type of Pokémon your opponent is. Assuming you have Internet connectivity where you are, after a moment you'll have your answer.
Siri's ability to successfully and accurately identify Pokémon based purely on you speaking their names is not built in to iOS; rather, like much of Siri's functionality, the information is pulled in from the Internet. Depending on what you ask, information is grabbed from a variety of different sources, then presented to you in a simple to understand manner.
In this image, I first asked Siri "what type of Pokémon is Pikachu?" to which I received the response "the answer is electric" followed by some more detailed information from WolframAlpha -- the "computational knowledge engine" that Siri uses any time you have specialist queries. In the second image, you can see that the information WolframAlpha holds on Pikachu (and indeed other Pokémon) includes its English and Japanese names, its Pokédex number, its type, color, game generation, icon and footprint.
In the third image, I asked Siri what kind of Pokémon electric-types such as Pikachu would be strong against. This time, Siri pulled the information from a straight Web search rather than WolframAlpha -- in this case, the first result was a page from Answers.com that answered my question without me ever having to pull up Safari. Convenient.
I'll be honest; I don't know enough about Pokémon to be able to test how up-to-date Siri and WolframAlpha's Pokémon database is -- but even if it's yet to incorporate some of the more obscure Pokémon from X and Y, it's certainly a helpful resource for how to deal with some of your more common opponents.
Thanks to @ultrabrilliant on Twitter for spotting this little trick.