On October 9th the KCOD as part of the SPIDER project presented the concept of Open SDI and its legal and ethical challenges to students of Wageningen University as part of the seminar Seminar Geodata, Citizens and Ethics. The presentation ‘Open SDI: Restoring the balance‘ addressed issues arising from the increasing amount of open government data in relation to the available non government data. The concept of open SDI may restore the information balance between government and non-government.