About us

After a great deal of organisational, documentary and development work, LEO2 has become the first software to obtain NF525 certification, along with PI.

NF525 certification is officially recognised (BOI 2014) by tax authorities as describing the characteristics that any POS system (or classic register) requires to meet their tax and security requirements.

This certification is not yet mandatory, but the Government is launching a national consultation with stakeholders and the affected bodies (Acedise, Afdel, trade associations, etc.) to examine the need for a law that would make this standardisation mandatory.Secured but uncertified software, provides no proof to tax authorities, as the owners of the software have secured their product without having it verified by an independent, outside organisation.

> Discover LEO2 POS Software.


Restaurant owner, backer, neighbourhood grocer, butcher, florist…

Find out what LEO2 can do for you


video2 200
LEO2 for restaurants: the perfect service
video1 200
Bakery: LEO2 register software and change machine
video3 200
LEO2 , POS system for any retail business
video5 200
LEO2, the ideal grocery shop manager


ATOO Software publisher
Contact mail : atoo@atoosarl.fr


(c) 2014 Callisens agency.