Modern Australian
Men's Weekly

.

Google’s SynthID is the latest tool for catching AI-made content. What is AI ‘watermarking’ and does it work?

  • Written by T.J. Thomson, Senior Lecturer in Visual Communication & Digital Media, RMIT University
Google’s SynthID is the latest tool for catching AI-made content. What is AI ‘watermarking’ and does it work?

Last month, Google announced SynthID Detector, a new tool to detect AI-generated content. Google claims it can identify AI-generated content in text, image, video or audio.

But there are some caveats. One of them is that the tool is currently only available to “early testers” through a waitlist.

The main catch is that SynthID primarily works for content that’s been generated using a Google AI service – such as Gemini for text, Veo for video, Imagen for images, or Lyria for audio.

If you try to use Google’s AI detector tool to see if something you’ve generated using ChatGPT is flagged, it won’t work.

That’s because, strictly speaking, the tool can’t detect the presence of AI-generated content or distinguish it from other kinds of content. Instead, it detects the presence of a “watermark” that Google’s AI products (and a couple of others) embed in their output through the use of SynthID.

A watermark is a special machine-readable element embedded in an image, video, sound or text. Digital watermarks have been used to ensure that information about the origins or authorship of content travels with it. They have been used to assert authorship in creative works and address misinformation challenges in the media.

SynthID embeds watermarks in the output from AI models. The watermarks are not visible to readers or audiences, but can be used by other tools to identify content that was made or edited using an AI model with SynthID on board.

SynthID is among the latest of many such efforts. But how effective are they?

There’s no unified AI detection system

Several AI companies, including Meta, have developed their own watermarking tools and detectors, similar to SynthID. But these are “model specific” solutions, not universal ones.

This means users have to juggle multiple tools to verify content. Despite researchers calling for a unified system, and major players like Google seeking to have their tool adopted by others, the landscape remains fragmented.

A parallel effort focuses on metadata – encoded information about the origin, authorship and edit history of media. For example, the Content Credentials inspect tool allows users to verify media by checking the edit history attached to the content.

However, metadata can be easily stripped when content is uploaded to social media or converted into a different file format. This is particularly problematic if someone has deliberately tried to obscure the origin and authorship of a piece of content.

There are detectors that rely on forensic cues, such as visual inconsistencies or lighting anomalies. While some of these tools are automated, many depend on human judgement and common sense methods, like counting the number of fingers in AI-generated images. These methods may become redundant as AI model performance improves.

An AI-generated image shows a woman waving with a six-fingered hand.
Logical inconsistencies, such as extra fingers, are some of the visual ‘tells’ of the current era of AI-generated imagery. T J Thomson, CC BY-NC

How effective are AI detection tools?

Overall, AI detection tools can vary dramatically in their effectiveness. Some work better when the content is entirely AI-generated, such as when an entire essay has been generated from scratch by a chatbot.

The situation becomes murkier when AI is used to edit or transform human-created content. In such cases, AI detectors can get it badly wrong. They can fail to detect AI or flag human-created content as AI-generated.

AI detection tools don’t often explain how they arrived at their decision, which adds to the confusion. When used for plagiarism detection in university assessment, they are considered an “ethical minefield” and are known to discriminate against non-native English speakers.

Read more: Can you spot the AI impostors? We found AI faces can look more real than actual humans

Where AI detection tools can help

A wide variety of use cases exist for AI detection tools. Take insurance claims, for example. Knowing whether the image a client shares depicts what it claims to depict can help insurers know how to respond.

Journalists and fact checkers might draw on AI detectors, in addition to their other approaches, when trying to decide if potentially newsworthy information ought to be shared further.

Employers and job applicants alike increasingly need to assess whether the person on the other side of the recruiting process is genuine or an AI fake.

Users of dating apps need to know whether the profile of the person they’ve met online represents a real romantic prospect, or an AI avatar, perhaps fronting a romance scam.

If you’re an emergency responder deciding whether to send help to a call, confidently knowing whether the caller is human or AI can save resources and lives.

Where to from here?

As these examples show, the challenges of authenticity are now happening in real time, and static tools like watermarking are unlikely to be enough. AI detectors that work on audio and video in real time are a pressing area of development.

Whatever the scenario, it is unlikely that judgements about authenticity can ever be fully delegated to a single tool.

Understanding the way such tools work, including their limitations, is an important first step. Triangulating these with other information and your own contextual knowledge will remain essential.

Authors: T.J. Thomson, Senior Lecturer in Visual Communication & Digital Media, RMIT University

Read more https://theconversation.com/googles-synthid-is-the-latest-tool-for-catching-ai-made-content-what-is-ai-watermarking-and-does-it-work-257637

How To Choose The Right Insulation For Your Space

Selecting the appropriate insulation for your home or building is a critical decision that affects comfort, energy efficiency, and present and future ...

7 Best Things to Do in Beaufort, Victoria

Beaufort is a charming small town in Victoria’s Goldfields, full of history, natural beauty, and warm, welcoming locals. Whether you’re passing th...

What to Expect During Divorce Mediation & Settlement

Divorce can be a difficult and emotionally draining process, but mediation and settlement often provide a constructive path forward. Instead of goin...

Navigating Disability Services in Perth: Your Questions Answered

Understanding the landscape of disability support can feel overwhelming, especially when you're just starting out. If you’re looking for support a...

How Veneers and Dental Implants Work Together for Full Smile Restoration

Modern dentistry has strong instruments that can produce life-changing outcomes when it comes to repairing a smile that has been impacted by tooth los...

Gen Z’s Are Going off Grid – But Is It Sustainable?

Australia’s cost of living crisis is causing Gen Z to get creative with frugal living options. Earlier this year, young couple Koby and Amelie wan...

The Risks of DIY Air Conditioning Installation and How to Avoid Them

Air conditioning is essential in Australia, especially during the scorching summer months, when homes and workplaces can become unbearable without rel...

How to Find Reliable Air Conditioning Services Near You in Brisbane Northside

Introduction In Brisbane’s hot and humid climate, air conditioning has become more of a necessity than a luxury. Whether it's keeping your home coo...

Enhance Outdoor Living with Lifestyle Awnings

Creating the perfect balance between indoor comfort and outdoor living is something many homeowners aspire to achieve. In recent years, Lifestyle Aw...

Why Buckets with Lids Are Essential for Safe Storage & Transportation

The right bucket can streamline transport and make handling easier day to day. With options suited to food, chemicals and construction materials, th...

Comfort and Style with Ceiling Fans Perth

While air conditioning is common, it is not always the most cost-effective or sustainable solution, particularly during long hot summers. For homeow...

How Professional Air Conditioning Services Improve Comfort and Efficiency

Air conditioning has become a fundamental part of homes and businesses, providing relief from sweltering summers and keeping interiors warm in winte...

The Value of Professional Rubbish Removal Services

From everyday waste to bulky items like furniture and appliances, finding the right way to dispose of rubbish is not always straightforward. This is...

Why Ugly Websites Sometimes Outperform Beautiful Ones

In the digital age, we're constantly told that first impressions matter, and nowhere does this seem more apparent than in web design. However, a cur...

TPD Claims & Super: What Does It All Mean?

Many Australians hear the term "TPD" in relation to their superannuation and feel completely lost. If you're scratching your head, wondering what it...

What Does Breastfeeding Feel Like? A Guide for New Moms

Frequently, numerous new mothers wonder, "What does breastfeeding feel like?" The feeling is different for each individual - a few describe it as a ...

Best Nail Care Routine for Frequent Nail Polish Wearers

For many people, nail polish is more than a beauty statement – it’s part of their everyday routine. Whether you love bold colours, chic neutrals...

Reinventing Research: How E-Libraries Are Changing Education Forever

A New Chapter for Learning For centuries libraries stood as temples of knowledge filled with shelves that smelled of dust and paper. Today the same...