When we want to go out we have to send an sms that is no charge to a 5 digit number.
In the sms we write out name and address and we choose one of 6 Numbers that each number is a reason that we go out.
For example, when we want to go for shopping we dial '2 name address', for exercise '6 name address' and then comes an answering sms with which we can go out. We need this number in case of police inspection us a justification of going out during lockdown.
This is a measure mostly to monitor population movement during lockdown. It is not that strict this time like in spring and people are less conservative.
In case you work you need a paper that is provided by the employer / company that also has time of going and returning from work, that justifies the purpose of movement in case of control. I've been going to and coming back from work the last 2-3 weeks and nobody has checked me until know.
These are measures mostly to adjust population movement in relation to lockdown.
We also have prohibition of movement from 21.00 to 5.00. But if you need something like let's say to go to a kiosk you can send an sms and move.
That's really odd. Luckily here in UK there is no such of requirements to go out or shopping when needed.
If you want to go for a walk, can you?