Using a phone to steal baseball signs

Using a phone to steal baseball signs

I always sucked at baseball… until now. Go to and use code MARKROBER to get 75% off a 3 year plan and an extra month for free.

Go subscribe to Jabril’s channel!!!

Simple app (it’s actually just a webpage for now):
Complex app using ML:

0:29 Dansez – Fasion
1:01 Dive – Lvly
2:19 Dansez – Fasion
4:16 Kalimba Jam – Blue Wednesday
5:23 Take Me Out to the Ballgame -Matt Cherne-
7:04 Arrow – Andrew Applepie
8:18 Cereal Killa – Blue Wednesday
11:16 Salamanca – Sarah, the Illstrumentalist
13:12 Q – Blue Wednesday
14:18 Too Happy to be cool – Notebreak

Summary: I wanted to see if I could make an app that could decode baseball signs. Turns out we could and it was a great opportunity for me to learn more about Machine Learning and neural networks from my friend Jabril.

They are soft-



I make videos like this once a month all year long while supplies last:





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47 Responses

  1. Stray216 says:

    *has to balance a long thing*
    *obviously chooses rocket golf bat and flamethrower*

    • MojoBeast: Science Yeti says:

      *not-a-flamethrower ?

    • Whale Cat says:

      @MojoBeast: Science Yeti um. Ya… It was a flamethrower

    • Kain Yusanagi says:

      @Whale Cat It’s literally called the “not-a-flamethrower”. Because the flame it emits isn’t long enough to qualify as an actual flamethrower. It’s basically a really big, cool toy version of a propane torch.

  2. L00PdeL00P's Channel says:

    Labs: lab rats
    Mark Rober: Human children

  3. Scott Clyburn says:

    *Youtuber Mark Rober has been fined 500k for tampering and cheating by local little league*

  4. Sujan Reviewsz says:

    This is the DEFINITION of quality over quantity.

  5. Commenter says:

    I got lost by the video title

    *Now I learn to ACTUALLY WATCH the video to understand it*

  6. Bailey Toon says:

    Ngl…. didn’t understand any of this even with the explanation…. but loved the video

  7. Bagua Gaming says:

    10:11 just causally balancing a rocket propelled golf club on his hand

  8. Pseudo Mortality says:

    Just waiting for the headlines “NASA Scientist Goes Missing After Little League Baseball Championship”

  9. Katie Giles says:

    Coach: We took years getting our secret signs down

    Mark: Hold my iphone

  10. Sillybelius says:

    The rise of the machines is coming

    We have you to blame

  11. Rémi-kun's World says:

    Why? Just *why, YouTube?* Why is it only 2 hours later that I get a notification?

  12. New age Jams says:

    This looks boring
    Me 14 minutes and 41 seconds later: woah

  13. MemesAreHealthy says:

    8:50 Is it just me or do I hear a minecraft dispenser noise?

  14. ThePowerless Track says:

    For some reason I thought the video was about stealing baseball signs ??????

    • Jordan Duffy says:

      ThePowerless Track it is… when you look at a team’s sign to figure out what it means, it’s called stealing sign. It just happens to be that he was stealing a steal sign

    • _ David _ says:

      It really do be like that.

  15. Caden Schaeffer says:

    9:56 of course this is a very simple model

    My brain: awh man what the hell

  16. DuDaJ - Jacob Downs says:

    Now MLB is going to be a lot more interesting if someone downloads this app and uses it during the game. ”’Now baseball is a whole new game…” XD

  17. Totally Cool Channel says:

    He should take this app down people will actually use this to steal signs

  18. TreadStone says:

    Damn this app will be abused by coaches ?

  19. Don Guru de Bro says:

    MLB wants to know your location!

    Awesome achievement as always! 😉

  20. Don Guru de Bro says:

    Signs “maker” exist.

    Mar Rober: I´m about to end this man whole career!

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