John Martellaro's photo

John Martellaro

John Martellaro was born at an early age and began writing about computers soon after that. With degrees in astrophysics (B.S.) and physics (M.S.), he has worked for NASA, White Sands Missile Range, Lockheed Martin Astronautics, the Oak Ridge National Laboratory and Apple. At Apple he worked as a Senior Marketing Manager, a Federal Account Executive and a High Performance Computing manager. His interests include chess, science fiction and astronomy. John is the host of the TMO podcast Background Mode.

Get In Touch:

TMO Background Mode Interview with Ruby Receptionists CTO Katharine Nester

Katharine Nester is the CTO and Chief Product Officer for Ruby Receptionists, a virtual receptionist service. She owes early influence to her father, a computer engineer, and that led to her B.S. degree in computer science from the Univ. of Calif. at Berkeley. Her first job was as a Hewlett Packard software engineer. Katharine is an active member of Portland’s growing tech community where she advocates for more inclusive environments to support women and minorities in the field and is a benefactor of App Camp for Girls. We chatted about the founding of Ruby Receptionists, early technical decisions that were made and how it operates. Katharine tells a great story about her personal career arc as well as what it’s like to be the CTO of a company that supports 7,600 other companies.

TMO Background Mode Interview with Tidbits Security Editor Rich Mogull

Rich Mogull has twenty years experience in information security, physical security, and risk management. He specializes in data security, application security, emerging security technologies, and security management. Prior to founding Securosis, Rich was a Research Vice President at Gartner on the security team where he also served as research co-chair for the Gartner Security Summit. Currently, he is the security editor at Tidbits. We chatted about Rich’s career, then delved into some security issues of interest to Apple customers: the relative security of macOS vs. Windows 10, the security of iOS, whether AES-256 encryption is still “good enough,” iCloud security, and the technical feasibility of an unhackable backdoor into our iPhones for law enforcement. If you’re interested in all things security, this is the show for you.

TMO Background Mode Interview with Kelly Guimont and Jeff Gamet - Everything 4K/UHD TV

In this very special edition of Background Mode, The Mac Observer’s Kelly Guimont and Jeff Gamet joined me to continue a previous discussion we’d been having about 4K/UHD television. It all started when I published an article, an adventure actually, about my project to get all my home video components working together to achieve 4K/UHD and Dolby Vision. One TMO Daily Observations podcast wasn’t enough to answer all the questions, and so we just kept on chatting, laughing and recording. Herein is most everything you need to know about setting up a 4K/UHD TV system with advanced High Dynamic Range (HDR), especially Dolby Vision.

Three Star Trek Technologies That May Soon Be Within Reach

Rich Smith, at The Motley Fool, is enthusiastic about a new book by Dr. Ethan Siegel, a Lewis & Clark College astrophysics professor, called Treknology. In that book, Dr SIegel describes some Star Trek technologies that we could see in our lifetime. Namely, transparent aluminum (oxynitride), deflector shields and tractor beams. The book is cool and author Smith’s essay about it is also cool.

TMO Background Mode Interview with Apple World Today's News Editor Dennis Sellers

Dennis Sellers is a seasoned journalist, reporter and news editor. He knew at a very early age that he wanted to become a journalist and that led to his Bachelor’s degree in Journalism from the University of Tennessee. He worked in the newspaper business for over 20 years, wrote freelance while he taught, earned his Master’s degree, signed on with MacCentral in the 1990s. After MacCentral was assimilated, he launched Macsimum News, an online newspaper covering the Mac industry and Apple news. In 2015, he joined Apple World Today as news editor. Dennis and I chatted about the state of Apple, hopes for macOS, his experience with his HomePod, Apple and education and what Apple might reveal at WWDC in June. He also explained the interesting domain his website uses.

PCalc, a Terrific Calculator App for iOS, is Apple's App of the Day

The best iOS calculator I’ve ever used is PCalc from James Thomson (TLA Systems).. By best, I don’t mean just good looks. I mean computational expertise imbued in an app that can be trusted to always get the answer right based on numerical analysis principles. PCalc is also a lot of fun, has a boatload of options in the settings, and even has an RPN mode for those who grew up with RPN on Hewlett Packard calculators.  It’s Apple’s App Of The day, so head on over and get the best designed calculator money can buy. It also has watchOS support.

TMO Background Mode Encore Interview with Tidbits Managing Editor Josh Centers

Josh Centers is the Managing Editor of Tidbits.com and has published several Take Control Books. His latest book is “Take Control of Apple Home Automation.” And so, I invited him to make a return appearance on Background Mode to chat about that very subject. The book is a complete guide and starts from the very beginning of the design and wiring process and the use of various hubs. Josh clearly explained how to use Apple’s HomeKit home automation platform to control smart devices in the home, such as lights, outlets, thermostats, and more. And he’s very frank about various myths surrounding home automation. We also chatted about beginner security concerns as well as the ability to maintain control and terminate any service if necessary. If you have an interest in home automation, this show is must listening.

TMO Background Mode Interview with Take Control Books Publisher Joe Kissell

Joe Kissell is a writer and author with over 60 technical books to his credit. He’s a contributing editor with Tidbits, and recently became the owner and publisher of the Take Control series of eBooks. Early in his career, Joe had a strong interest in language and holds a Master’s degree in Linguistics. Along the way, however, he also got very technical with computers, and that landed him a job as a product manager with Nisus. Subsequently, Joe was a software developer for Kensington. In 2017, he accepted an offer from Adam Engst to acquire Take Control Books. Joe and his wife run that business—currently using a brand new iMac Pro. When not editing, Joe pursues T’ai Chi, cooking, walking and travel. Joe tells his career story, chock full of technical serendipity, with awesome charm.

Apple’s Annoying OS Antics

macOS is brilliant. It’s the best GUI and development environment ever put on top of a UNIX OS. So why does Apple engage in so many silly things that annoy (or imperil) users? Particle Debris page 2 looks at three.