Student projects are of three types:
Semester/Bachelors projects - these are short projects which are undertaken as part of undergraduate training.
Masters projects - these are longer duration (typically 6 months, depending on department) for undergradates.
PhD projects - these are paid full time 3 year projects. You must be admitted to the ETH as a graduate student.
For all projects, you must be a registered student either at the University of Zurich or the ETH Zurich. This restriction applies even for visiting students, although it is possible to register as a visiting student.
See Sensors Group Available Projects for more information.
Please feel free to mail me about these projects.
You can also call me directly; see http://www.ini.uzh.ch/~tobi/contact.php.