Audience Questions

Audience QuestionsHour 1

Hour 1 Hour 2 Hour 3
Watch Nate from Tustin, CA Comments

Nate is looking for a fast way to digitize his Mom's physical photos. Leo says that you can go to a service bureau like Scancafe where you can ship them your photos in a box that they send you, and they will send you back CD's of your digitized photos. However, since Nate has tons of photos to be digitized, Leo recommends buying a scanner and doing it himself. Leo recommends the brand, Epson, on scanning your photos because they have a type of scanners called FastFoto that has a feed that is great for scanning photos quickly. The price on these scanners range between $350 - $500, depending on where you look.

Watch Al from Ventura County, California Comments

Al says he's been watching Smarter Every Day on YouTube and he has learned about click farms that are designed to create bogus views and clicks on YouTube to not only earn ad revenue but to skew the recommendation engine to drive videos that wouldn't normally be recommended. Leo says that YouTube really needs to address this by 1) getting rid of comments, and 2) getting rid of the recommendation engine. 

Audience QuestionsHour 2

Hour 1 Hour 2 Hour 3
Watch Tom from Harrisburg, PA Comments

Tom purchased a new OLED TV and it brought him to do research into the average diameter of an atomic nucleus and cutting circuit lines. Tom wants to know how production facilities are able to cut circuit lines so small and address the wiring grid within so that they don't overlap one another. Leo tells Tom that the process is called Microlithography, which he explains is similar to the idea of silk screening: Painters paint on a screen of silk and then apply ink to it, and the ink goes through the part of the silk that isn't painted. It's a fascinating process.

Also, Tom wants to know what the difference is between an OLED TV and a QLED TV? A QLED TV is an LCD screen with quantum-dot backlighting; it's still an LCD screen at the end of the day. 

Watch Steve from San Antonio, California Comments

Steve is amazed at how GPS mapping apps can know what the best and fastest route is. Leo says that WAZE is crowd sourced, so it gets real time traffic data from Waze users themselves, and it can work to route you around it.

Steve is also a photographer and wants to know what are good online sources to share and get feedback. Leo says that while it has changed recently, Flickr is a good place to post for community input. 

Watch Mark from Pittsburgh, PA Comments

Mark has an old Windows 7 / XP machine with Windows Media Center and is looking to repurpose it. Mark is wondering if he should pull the hard drive and install Linux onto the drive and use MythTV DVR application on it? Leo says that it should be fine, but warns Mark of using the machine for more than just a DVR machine. Leo says that there are risks using an XP machine since there haven't been new updates for XP machines in some time, it could be infected with viruses passively when going online. But with Mark installing Linux onto the hard drive and him having a router, there shouldn't be any problems with Mark's plan.

Watch Earnest from Brawley, CA Comments

Earnest's phone automatically changes time zones whenever he goes to Disneyland to a specific area in the park and wants to know why it's doing that? Leo says there's a setting in the phone that he can turn off to prevent it from automatically setting the time zone. But Leo also thinks it could be that the cell site in that area of the park is misconfigured to the wrong time zone, or depending on if he is on a WiFi network, that network is configured to a specific time zone.

It also could be that the phone may sometimes join an open-access point automatically, like the Comcast Xfinity ones that are in some public areas. Once he joins one of them, he will join them no matter where he is if there's one of those points available for the phone to connect to.

Audience QuestionsHour 3

Hour 1 Hour 2 Hour 3
Watch Rick from Thousand Oaks, CA Comments

Rick hears that Wifi and cellphones can cause cancer due to radiation. Leo says that there is a lot of disinformation out there and fearmongering. Radiation from these sources exist, but they diminish rapidly with distance. There no known issue with WiFi or Cellphone waves... not even high power electrical lines. 

Watch Jack from Riverside, CA Comments

Jack has an Epson printer and is having issues scanning from the control panel. It says it can't find the computer, even though he can print wirelessly. Leo suspects that there may be a driver issue on the computer. He recommends removing the printer and scanner drivers, reboot and reinstall. He can also try scanning to another computer. If that works, then it isn't the driver at all, it's an issue with the computer.

Watch Carmine from Chicago Comments

Carmine is having issues updating Windows. He's behind and can't update to "1809." He's on 1803. Leo says that 1809 wasn't a good update, and Microsoft just skipped it and moved on to 1903. Eventually, Carmine will get it. There are ways to force it, and he can "check for updates." But Leo says that feature updates aren't as important as security updates. Eventually, it'll come.

Watch Don from Omaha, NB Comments

Don wants to use a Yubikey to keep his computer safe online. Leo says that the Yubikey is serious two-factor authentication that enables users to generate a code to offer an extra level of security. It's a physical USB device that spits out a code with a one time password. Leo uses it for his email, Twitter, and a host of other sites online. He wishes his bank would support it. He keeps it on his keychain, using a Type C connector. But he can get a Type A adapter as well.

There's even an open source version called SOLOKEYS, which Leo says is every bit as good.

Watch Bonnie from San Diego, CA Comments

Bonnie got an invoice from her travel agent via email, which she was expecting, and now she's having issues. Leo says that's not wise to do because she should never open attachments. But she had to update her PDF reader, and that's when the problem started. She downloaded a suspect version of Reader. 

Macs and Windows 10 open PDFs without additional software. So Bonnie shouldn't have had to use a reader and Leo suspects she was infected with malware. The good news is, that because she's on a Mac, the software she installed wasn't written for a Mac and the saving grace is that it can't really infect her. It's just having problems reading it. So Leo recommends uninstalling the PDF reader.  Let macOS open it.

But probably the safest thing would be to get the data backed up, wipe the drive and reinstall macOS. Assuming she's been hacked is a safe idea because she can wipe out anything that may be there. Leo recommends going to the Apple Store.