The 33-year-old signed a two-year deal with the north London club on a free transfer after former club Burnley opted against extending his contract on its expiry.
The two-time Premier League winner will bring a wealth of experience to a relatively young Tottenham squad, also helping the club meet their homegrown player quota.
Hart has already got a taste of Tottenham's state-of-the-art stadium, featuring in the club's opening pre-season fixture - a 3-0 win over Ipswich, in which both Hugo Lloris and Gazzaniga also played.
Robinson, who made 175 appearances for Tottenham, believes his former club have made a sensible signing, insisting Hart has not come to simply make up numbers.
“It is a very sensible signing for all parties,” Robinson told Football Insider. “It is a huge box ticked – another home-grown player.
"You have seen the likes of Scott Carson and Richard Wright [at Manchester City], Lee Grant at Manchester United and Rob Green at Chelsea.
"But saying that I think the Joe Hart situation is different at Spurs.
“He will not be going there to rest on his laurels. He will be thinking, and certainly, I would be thinking, that Lloris has been injury prone and inconsistent over the past couple of seasons, Gazzaniga has done OK’ but Joe Hart definitely believes he is better than him.
"He will fancy his chances of playing.
“With the number of games that Spurs have got, given that they have to go into the Europa League early, there will be game time. It is a real opportunity for him to play some games.
“Whether the signing of Joe Hart means that Gazzaniga is moving on we will have to wait and see.”
