He means that satellite navigation systems will surely get your location but you will never know where you are.
The explanation here is that people lose the sense of connecting with nature when technology takes over. People nowadays do not see the need of wanting to know because they will just look it up in Google! Thus with the current rate of technological advancement, people are losing the mastery and knowledge about the surroundings which develops with time and deep engagements with things.
This argument is persuasive because the meaning of life originates from mastery of knowing things that surrounds us from experience and interaction but if technology does it for us, then what do have to be proud of?
