3-IN-1 FOREIGNER TAX, comprising:

Being-Asked-How-Long-You-Are-In-Slovenia Tax

Being-Asked-From-Where-You-Are Tax

Being-Asked-How-You-Came-In-Slovenia-etc. Tax

With helpful locals always on hand to repeatedly interrrogate strangers, maximising Slovenia's export revenues with a low-energy footprint is a cinch. Watch them writhe while you tithe!

With real-time 0.0001 millisecond resolution satellite updates showing how long every foreigner has been in Slovenia as reported minute by minute from the troops on the ground, tagged with their place of origin and how they came in Slovenia etc.