開発スタッフがアプリ関連の最新技術やニュースをご紹介します。

Microsoft has revealed its plan to phase out NT LAN Manager (NTLM) authentication in Windows 11 to enhance security and focus on bolstering the Kerberos authentication protocol. This move includes the introduction of features like Initial and Pass Through Authentication Using Kerberos (IAKerb) and a local Key Distribution Center (KDC) for Kerberos in Windows 11.

NTLM, a security protocol from the 1990s, was originally designed for user authentication, integrity, and confidentiality. However, it has been replaced by Kerberos since Windows 2000, though it continues to be used as a fallback option. NTLM relies on a three-way handshake for user authentication and uses password hashing, while Kerberos employs a two-part process with encryption.

NTLM has been found to have inherent security weaknesses and is vulnerable to relay attacks, which could potentially allow unauthorized access to network resources.

Microsoft is actively working to address hard-coded NTLM instances in its components as part of its preparation to disable NTLM in Windows 11. These changes will be enabled by default, with no need for additional configuration in most scenarios. NTLM will still be available as a fallback for maintaining compatibility with existing systems.

Asahi

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Google is introducing generative AI capabilities to its popular Google Photos app through the release of the Pixel 8 and Pixel 8 Pro smartphones. Initially revealed at Google’s I/O developer conference in May, this feature enables more advanced photo edits, such as filling in gaps, repositioning subjects, and adjusting the foreground or background of images. Previously, achieving these effects required external tools like Google’s Magic Eraser or professional software like Photoshop, involving more manual effort.

Using generative AI, Google Photos allows users to perform complex edits like resizing or repositioning subjects with ease. Users can tap on the object they wish to edit, drag it to move or pinch to resize, and make contextual adjustments to lighting and background. Magic Editor also offers multiple output options for user preference. However, Google acknowledges that the feature is in its early stages and may not always produce the desired results but hopes to improve it with user feedback and technological advancements.

The real-world testing of Magic Editor is imminent, and Google Photos users, especially those on the newer Pixel devices, will have the opportunity to try it out. With 1.7 billion photo edits made by Google Photos users monthly, the potential for learning and improvement is significant. This feature is part of a broader set of AI-powered photo-editing tools for the Pixel 8 and 8 Pro, including Best Take, Zoom Enhance, and enhancements to Magic Eraser, which will be available on Pixel 8 devices starting October 12.

Yuuma

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Meta社の新型ヘッドセット、Meta Quest 3 が昨日(2023/10/10)発売開始されました！

Quest 1やQuest 2 はVR(Virtual Reality 仮想現実)ヘッドセットでしたが
Quest 3ではMR(Mixed Reality 複合現実)ヘッドセットとして登場です。

Apple社から来年(2024年)発売予定の Vision Pro もMRヘッドセットとしての使用がアピールされていたので、今後はVRをさらに発展させたMRが主流となっていきそうです。

VRの仮想空間では現実世界と切り離された仮想空間の中でゲームをプレイしている人は
その他の人(ゲームをプレイしている人を横から見ている人)と現実では同じ空間にいても
隔離されて孤立してしまうという問題がありました。

VR体験を同じ部屋にいる他の人といっしょに共有できないという点がVRの弱点かなと思っていましたので、その弱点が今回のMR対応によって解消されたように思います。

MRではパススルーカメラで見えている現実世界の上に仮想のオブジェクトを配置して遊ぶことができ、
それをリアルタイムで複数のヘッドセットと共有することができます。同じ部屋に集まって複数人で
遊ぶ際などQuest 3が人数分用意できれば、みんなで同じ空間を共有しながら遊ぶことができます。

以下のYouTubeで、複数人で同じ部屋でMRのボードゲームやシューティングゲームをする様子が紹介されています。
https://www.youtube.com/shorts/r9txAdERckY

これは今までにない楽しい体験ができそうです。

木曜日担当：nishida

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Edgeブラウザ上などで利用できるBing ChatにDALL-E 3が搭載されたようです。

もともDALL-E 2を利用した画像生成は可能でした。
DALL-E 3に変わったことでプロンプトを細かく設定することができ、
より写実的な画像を出力可能になったそうです。

Bing Chatの入力欄に「〜の絵を描いてください」と入力することで
イラストを出力してくれました。

出力された画像の例を見る限りではありますが、
画像生成AIでよく発生する指の破綻が少ないように思えます。

水曜担当：Tanaka

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Today, I would like to share about 3 free alternatives to GPT-4. Let’s take a look.

LlaMA 2

LlaMA 2 is a cutting-edge open-source large language model developed by Meta AI. It’s available for commercial use and comes with pre-trained models, fine-tuned models, and code resources. You can find all these assets on HuggingFace. You can also get a feel for how well the model performs by trying it out on HuggingChat. By making LlaMA 2 openly accessible, Meta AI is empowering researchers and developers to create innovative applications that leverage advanced language capabilities.

PaLM 2

Google AI’s PaLM 2 is Google’s latest large language model, excelling in advanced reasoning tasks like coding, mathematics, classification, question answering, translation, multilingual proficiency, and natural language generation. It surpasses previous state-of-the-art large language models like the original PaLM due to its optimized compute-scaling approach, improved dataset mixture, and architectural enhancements. You can access PaLM 2 for free using Bard. While there’s still room for improvement compared to GPT-4 in terms of quality and performance, it offers impressive capabilities.

Claude 2

Claude 2 represents the latest version of Anthropic’s conversational AI assistant. It offers improved performance, longer responses, and can be accessed through an API as well as a new public beta website, claude.ai. Developers at Anthropic have focused on enhancing its capabilities in areas such as coding, mathematics, and logical reasoning compared to earlier Claude versions. For instance, Claude 2 recently achieved a score of 76.5% on the multiple-choice section of the Bar exam, a significant improvement from Claude 1.3’s 73.0%. You can access various Claude models on Poe and experience their performance firsthand.

Conclusion

Despite GPT-4 being unavailable to the public, there are other promising open-source large language models emerging as alternatives that are accessible to everyone. While these models may not be as massive as GPT-4, they show that cutting-edge language AI is evolving rapidly and becoming more widely available. These freely accessible models excel in fields such as mathematics, coding, and logical reasoning, making them suitable replacements for various applications.

Asahi

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