The Tribune

• A self-driving car is hitting the streets of Boston for the first time.

The state has given the green light to Cambridge-based company nuTonomy Inc. to start testing a self-driving car in a small section of the city beginning this week.

The testing at first will be confined to the 191-acre Raymond L. Flynn Marine Park in South Boston, which has a simple road layout and no traffic lights. Testing will also be limited to daylight hours and good weather.

The car will also have a person in it, ready to take over if necessary.

If things go well, the testing will expand to more complicated road patterns in other areas, and at night or in rain and snow.

The company already has self-driving cars in service in Singapore.

• President-elect Donald Trump says that “no computer is safe” when it comes to keeping information private, expressing new scepticism about the security of online communications his administration is likely to use for everything from day-to-day planning to international relations.

Trump rarely uses email or computers despite his frequent tweeting.

“You know, if you have something really important, write it out and have it delivered by courier, the old-fashioned way.

“Because I’ll tell you what: No computer is safe,” Trump told reporters during his annual New Year’s Eve bash. “I don’t care what they say.”

Trump has repeatedly cast aside allegations by U.S. intelligence agencies that Russia tried to influence the presidential election through hacking. President Barack Obama earlier this week ordered sanctions on Russian spy agencies, closed two Russian compounds and expelled 35 diplomats the U.S. said were really spies.

The Russian government has denied the allegations.

• Neither the holiday season nor New Year’s fitness resolutions seem to be helping wearable gadgets break into the mainstream.

Research firm eMarketer has lowered its outlook for smartwatches and fitness trackers such as the Apple Watch and Fitbits.

It’s not that the craze has died down — it’s more like there never was one to begin with.

The research comes as gadget makers large and small prepare to unveil new wearable devices at the CES tech show in Las Vegas this week.

In October 2015, eMarketer expected wearable gadget to grow more than 60 percent among U.S. adults in 2016.

That’s now down to less than 25 percent.

While fitness trackers are relatively cheap and straightforward to use, eMarketer says smartwatches haven’t caught on because they are expensive and lack a well-defined purpose.