A virtual billboard in the form of a smartphone app might be preferable in different kinds of public spaces.
(Potential) customers need to (a) know about the app and (b) care enough to install it and (c) care enough to check it at the right time. However a big physical billboard has none of these problems. Potential customers are much more likely to see your message.
(Potential) customers need to (a) know about the app and (b) care enough to install it and (c) care enough to check it at the right time. However a big physical billboard has none of these problems. Potential customers are much more likely to see your message.