There are several trackers that provide automated activity recognition features. Here are a few examples:
Fitbit:

Fitbit trackers are known for their accurate activity tracking and automatic activity recognition. The Fitbit app uses sensors in the device to detect various activities, such as running, walking, cycling, and swimming.
Garmin:

Garmin offers a variety of fitness trackers and smartwatches with automatic activity detection. The devices use a combination of sensors and machine learning algorithms to recognise activities such as running, walking, and cycling.
Apple Watch:

The Apple Watch also offers automatic activity recognition through its built-in sensors and algorithms. It can detect a range of activities, including running, walking, cycling, swimming, and even yoga.
Samsung:

Samsung offers several fitness trackers and smartwatches with automatic activity recognition. The devices use a combination of sensors and machine learning algorithms to recognise activities such as running, walking, and cycling.
Misfit:

Misfit offers a range of fitness trackers with automatic activity recognition. The devices use sensors to detect activities such as walking, running, swimming, cycling, and more.
These are just a few examples of trackers with automatic activity recognition features. It’s important to research and compare different options to find the best tracker for your specific needs and preferences.