Stellar Security is a provider of next-generation modern technologies to enhance your communication and devices with high-end security and privacy solutions. A smooth design with solid hardware built on StellarOS. The Stellar Phone is slick and packed with just the right security features. Stellar Security is a provider of next-generation modern technologies to enhance your communication and device with high-end security and privacy solutions. Create notes effortlessly, lock them securely. Your thoughts, your privacy. Simplified.