Hi,

In this task, you will need to type codes that will be displayed to you within a time limit.

Please enter your ID. Do not refresh or close this page, otherwise you will not be able to enter again.

Before we start, please indicate your level of proficiency in English language:

Native English speaker

Fluent in English

Less than fluent in English

This task does not run in cellphone devices, so please use a PC or notebook.

It should take you 4-5 minutes to do the whole task. Once you start, do not stop.

Start only if you have time available to do the task without interruptions or distractions

A bonus of $ 0.50 will be given to the 50 fastest participants who type 100% of codes right.

Ready for the challenge?