StealthTalk Private Messenger vs Tel MCX

StealthTalk is a private messenger designed to meet high demands of business- and privacy-minded professionals. Based on a patented SDNP protocol developed for professional use in telecommunications, StealthTalk bridges the gap between professional and consumer security solutions. KEY FEATURES Secure Voice Calls Make secure calls with exceptional voice quality, even with slow internet connection speeds based on TETRA professional communication standards and SDNP protocol. Secure Messages Exchange true end-to-end encrypted messages with all sensitive message data encryption and decryption taking place entirely on the user device. Self-Destruct Messages Send confidential messages that are erased automatically after a selected period of time. Stealth Mode Protected stealth environment for sensitive calls and messages that requires users to enter their password to preview messages or receive calls. PRIVACY & SECURITY End-to-End Encryption All communication within StealthTalk is always protected with end-to-end encryption powered by a patented SDNP protocol that uses ECC 512, AES 256 and SHA-3 512 as primitives. Zero-Knowledge Proof StealthTalk knows nothing about the content of your messages or calls. User data is not collected or stored on StealthTalk servers and cannot be analyzed, sold or disclosed. Professional Telecommunications Technology StealthTalk communication security is based on the patented, tried and field-tested SDNP protocol developed for and used in professional telecommunications. REQUIRED PERMISSIONS StealthTalk requires the following permissions to deliver its private messaging services and ensure all features are operational. • Contacts: Contacts permission is used to match you with your contacts using phone number hashes. StealthTalk does not monetize, collect or store your address book data. • Microphone: Microphone access is required to make secure voice calls • Bluetooth & Location: Bluetooth and location access is needed to locate devices close to you and enable encryption key exchange. • Camera: Camera access is needed to add new contacts via QR code and send pictures with the built-in camera. • Storage: Storage access is needed to store images and files that you receive in chats. For additional information and suggestions, please contact support@stealthtalk.com

Teltronic T.Flex is an all-in-one mission critical communications powerhouse that connects people in a variety of ways in a wide range of situations. Its capabilities comprise voice and video calls, messaging, tracking (including indoor localization), task management and more. The uses of the app are versatile. For some users, it helps ensure smooth operation of their business. For others, it's part of the security toolset. Importantly, it can be vital in responding to dangerous incidents where lives depend on timely communication. Whether you're a logistics specialist, a guard on patrol, a firefighter or a police officer, you will appreciate the reliable power of Teltronic T.Flex, its focus and ease of use. This app is the client-side component of the TELTRONIC framework. TELTRONIC provides mission critical push-to-talk (MC-PTT) capabilities in LTE networks over the Internet Protocol (IP) and builds a comprehensive communications and emergency response solution on that foundation. The following are some highlights of the TELTRONIC features that Teltronic T.Flex implements. Voice communication features Call capabilities are at the heart of mission-critical communications. In addition to the obligatory group and individual calls, Teltronic T.Flex offers an extended set of voice and video call types. • Individual, group and channel calls • Emergency calls • Priority calls • Video calls • Offline user calls • Voice recording and playback Messaging features In situations where voice communication is not your first choice of format, use free-form or template-based text messages, or send arbitrary files over your TELTRONIC network. • Text and file exchange • Template-based status messages Lone worker protection features Intended for ensuring the safety of employees who are working in hazardous conditions, these features rely on sensor and battery charge data. These readings can indicate emergencies and cause alerts to be triggered. • Sensor state tracking • Automated alerts (such as Man Down) based on sensor data analysis • Battery charge monitoring Location and tracking features Always-on location tracking is a core component of Teltronic T.Flex operation and in many cases the reason to use the app. Access to location is required by dispatchers for ensuring personnel safety and tracking assets. • Subscriber identification and location markers • Detailed street view • Guard tour planning • Waypoints • Indoor localization Other features • Remote listening and camera • Task management and control Note that the feature set for your particular Teltronic T.Flex setup will be as broad or as lean as your TELTRONIC administrators configure it to be.