美企Skydio挑战大疆主导地位
美国无人机制造商Skydio向乌克兰交付新型X10D无人机，具备抗电子干扰能力。美国计划年底前禁止大疆等中国无人机进入市场，Skydio抓住机遇，已向650个政府机构供货。
但中国反制导致Skydio电池供应中断。该公司虽加速本土生产，总产量仅4.5万台，远低于大疆每周数万台的产量。美国基层执法部门则抱怨Skydio价格过高，单台售价达1.2万美元。
五角大楼数据显示，按目前损耗率，美军无人机库存仅够支撑5天战斗。Skydio正研发"机库基站"系统，实现911报警后90秒内自动出勤。
Bloomberg
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Since the violent storming of Capitol Hill and subsequent ban of former U.S. President Donald Trump from Facebook and Twitter, the removal of Parler from Amazon’s servers, and the de-platforming of incendiary right-wing content, messaging services Telegram and Signal have seen a deluge of new users. In January alone, Telegram reported 90 million new accounts. Its founder, Pavel Durov, described this as “the largest digital migration in human history.” Signal reportedly doubled its user base to 40 million people and became the most downloaded app in 70 countries. The two services rely on encryption to protect the privacy of user communication, which has made them popular with protesters seeking to conceal their identities against repressive governments in places like Belarus, Hong Kong, and Iran. But the same encryption technology has also made them a favored communication tool for criminals and terrorist groups, including al Qaeda and the Islamic State.
Telegram has made it easier for its users to communicate, as it has introduced a feature that allows more than 200,000 users in a group chat. However, if the users in a group chat move past 200,000, it changes into "Broadcast Group", but the feature comes with a restriction. Groups with close to 200k members can be converted to a Broadcast Group that allows unlimited members. Only admins can post in Broadcast Groups, but everyone can read along and participate in group Voice Chats," Telegram added.
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