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First, see what your phone can do.
A one-minute test with the camera. Then four words to know, how the course works and what you need. You don't need to know anything first.
Your phone recognizes things on its own.
Turn on the camera and point it at what's around you. Each thing your phone recognizes gets a yellow box with its name.
- Tap Turn on the camera and, if your phone asks for permission, tap Allow. The first time, the model downloads, about 19 MB.
- Point the camera up close at things around the house, a cup, a bottle, a chair or a book.
- Now put your phone in airplane mode. The recognition keeps going, because the model runs inside the phone.
If the camera won't turn on, see Troubleshooting.
You just used EfficientDet-Lite0, a model that learned to recognize 80 kinds of objects by looking at more than a hundred thousand photos. It weighs about 7 MB, and the images never left your phone.
What you just saw has four names.
- Artificial intelligence01.04The broad name for programs that do things that usually take a person, like recognizing a cup in a photo.
- Machine learning01.04How almost all artificial intelligence is built today. Instead of writing the rules by hand, you show the program lots of examples with the right answer and it finds the rules on its own. The lesson How a model learns shows how.
- Model01.01What's left at the end, a file full of numbers that turns a piece of data into an answer. A photo goes in, the word cup comes out.
- Edge AI01.01Running the model where the data is born, meaning on the phone, instead of sending the photo to a data center. That's why the test above works in airplane mode too. It's what the whole course is about.
A map, seven courses and a lab.
- The mapThe home page is the course map and each stone is a lesson. The Basics are open from the start. When you finish them, the five intermediate courses and the lab open together. When you finish those too, the final project opens.
- Listen or readEach lesson works in two ways. With Listen a voice tells the lesson, the subtitles follow the words and a 3D scene builds up as it speaks. With Scroll & read you read at your own pace and the scene follows your scrolling.
- Try it and quizAt the end of each lesson there's something to try with the phone in your hand, then a few questions. When you have answered them all, the lesson counts as done and its stone turns yellow. Answering is what counts, not the score.
- The labIt opens with the intermediate courses. You collect examples with the camera, the microphone, the motion sensors or the keyboard, and the phone trains a model of your own. In the end you use it in airplane mode too.
- If you forget somethingTap an underlined word, or the Search button at the top. They take you to the chapter that explains that topic.
- No accountYour progress stays in your phone's browser. If you switch browser or phone you start over, but all the lessons are still there.
A phone and a browser, nothing else.
- A phoneA phone from the last four or five years is fine. Older ones work too, just more slowly.
- An up-to-date browserChrome on Android, Safari on iPhone. Other recent browsers work too.
- A connection, the first timeThe pages you open and the models you download stay on the phone. After that they work offline too.
- A little spaceThe lab models weigh from a few MB up to about 135 MB, the one for sentences.
- PermissionsThe camera, microphone and sensors only turn on when you tap a button, and the first time your browser asks for permission. What they collect stays on the phone and goes to no server. On iPhone the motion sensors ask for a separate permission. You can take permissions back whenever you want, in your browser settings.
If something doesn't work, the Troubleshooting page has step by step fixes.
To see how the course is built, who writes it and the frequent questions, go to How it works.