No! And this is also an advantage for your internal organization. The administration of halion clock:it and halion clock:it go can be carried out entirely by your internal IT department, without it needing access to the actual personnel administration. This means that you do not have to give administrative access to the HR solution to any employees who are not directly involved in personnel administration.
In the backend of halion clock:it, no more information about an employee is needed for stable operation than their name, their badge number - i.e. the ID of their time recording badge on the terminal - and at most their internal personnel number.