Interfacing
Payment System
Operational
Support
Maintenance
Operator
Advertiser
(Functional
Beneficiary)
Advertiser
(Normal
Operator)
Digital Signage
System
Government
Manager /
Owner (System Owner)
Malicious User
(Negative
Stakeholder)
Third party payers
(Financial
Beneficiaries)
Media
Loc Mgr
(Normal
Operator)
Loc Mgr
(Functional
Beneficiary)
Operational Staff
(Normal
Operator)
Viewer
(Functional
Beneficiary)