You will be provided with a reference and some statements. Please determine whether each statement is 'supported', 'unsupported', or 'unknown' with respect to the reference. Please note:
First, assess whether the reference contains any valid content. If the reference contains no valid information, such as a 'page not found' message, then all statements should be considered 'unknown'.
If the reference is valid, for a given statement: if the facts or data it contains can be found entirely or partially within the reference, it is considered 'supported' (data accepts rounding); if all facts and data in the statement cannot be found in the reference, it is considered 'unsupported'.

You should return the result in a JSON list format, where each item in the list contains the statement's index and the judgment result, for example:
[
    {
        "idx": 1,
        "result": "supported"
    },
    {
        "idx": 2,
        "result": "unsupported"
    }
]

Below are the reference and statements:
<reference>
Smart Home Market on Track for Rebound Thanks to Emerging Regions, According to IDC · EMSNow

NEEDHAM, Mass.– Global shipments of smart home devices are set to stall once again in 2024 as volume remains flat with 0.6% growth to 892.3 million devices,

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EMSNOW Mexico

EMSNOW India

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EMSNOW India

EMS Profiles

Global 100

Smart Home Market on Track for Rebound Thanks to Emerging Regions, According to IDC

October 7, 2024

Analysis
,
Consumer
,
Gaming
,
Internet of Things
,
OEM

NEEDHAM, Mass.
– Global shipments of smart home devices are set to stall once again in 2024 as volume remains flat with 0.6% growth to 892.3 million devices, according to the International Data Corporation (
IDC
)
Worldwide Quarterly Smart Home Device Tracker
. High penetration and long refresh cycles in mature markets such as the US have curbed growth though worldwide shipments are set to return to growth in 2025 on the backs of emerging markets, driving unit shipments to grow 4.4% to 931.1 million units.

Home monitoring and security products such as connected cameras, door locks, and doorbells are quickly rising to the top, representing over a quarter of the volume throughout the forecast. “The upside of additional security camera purchases is often much larger than the upside of follow up smart TV or smart speaker purchases as consumers go through their smart home journey,” said
Jitesh Ubrani
, research manager for IDC’s
Mobility and Consumer Device Trackers
. “Not only does consumer’ need for additional security coverage grow but many also subscribe to cloud storage or artificial intelligence features (AI), making security cameras a key category for many smart home companies.”

Rather unfortunately, smart speakers which helped jumpstart the smart home market, are now expected to decline 8.8% in 2024 before rerunning to a very mild 0.7% growth in 2025. The smart speaker category is in some ways reverting to simplicity as its greatest selling point – fewer frivolous displays, fewer cameras, and simplified voice input as Google, Amazon, and others eventually bring their latest conversational AI to these speakers.

That said, AI is also expected to be a selling point for other categories such as Smart Vacuums which have seen an immense rise in recent years thanks to a flood of new brands and an increased number of price points. “Brands have mostly nailed the basics such as vacuuming and mapping and are now focused on improving object recognition through the use of AI as well as additional features such as mopping,” continued Ubrani. “This is where many of the Chinese brands such as roborock, Eufy, Dreame, and Narwal have pulled ahead of the competition and in the case of roborock, supplanted themselves as the market leader.”

Looking ahead, IDC estimates the smart home market to growth with a compound annual growth rate (CAGR) of 5.6% between 2024 and 2028, amounting to 1.1 billion units shipped in the final year. Emerging markets, the continued proliferation of AI, and a refresh cycle amongst mature categories such as TVs are expected to add to the growth.

Worldwide Smart Home Device Forecast by Shipment Volume, Market Share, and 2024-2028 Growth Rate
(shipments in millions)

Device Category

2024 Shipments*

2024 Market Share*

2028 Shipments*

2028 Market Share*

2024 – 2028 CAGR

Home Monitoring/Security

244.4

27.4%

308.6

27.8%

6.0%

Video Entertainment

269.7

30.2%

287.9

26.0%

1.6%

Smart Speaker

87.4

9.8%

95.3

8.6%

2.2%

Smart Vacuum

19.9

2.2%

24.8

2.2%

5.7%

Others

270.9

30.4%

391.7

35.3%

9.7%

Total

892.3

100.00%

1,108.2

100.00%

5.6%

Source: IDC Worldwide Quarterly Smart Home Device Tracker, September 30, 2023

* Table Note:
All values are forecast estimates.

IDC’s
Worldwide Quarterly Smart Home Device Tracker
provides insightful analysis, quarterly market share data, and a five-year forecast for the smart home device market.

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</reference>

<statements>
1. IDC expects security growth to be monetised through cloud storage and AI subscriptions
2. IDC’s Worldwide Quarterly Smart Home Device Tracker, as reported in October 2024, is materially narrower: 892.3 million units in 2024, 931.1 million forecast for 2025, and a 5.6% CAGR to 1,108.2 million by 2028
3. IDC’s category table includes video entertainment, smart speakers, home monitoring/security, smart vacuums and a broad “Others” category
4. IDC: 892.3m in 2024 to 1,108.2m in 2028 at 5.6% CAGR
5. IDC: Home Monitoring/Security 244.4m units in 2024 to 308.6m in 2028, 6.0% CAGR, 27.4% to 27.8% share
6. IDC: “Others” 270.9m to 391.7m at 9.7% CAGR; Smart Vacuum 19.9m to 24.8m at 5.7%; Smart Speaker 87.4m to 95.3m at 2.2%; Video Entertainment 269.7m to 287.9m at 1.6%
7. IDC’s category logic is especially useful for product planning. Its research manager argues that additional security-camera purchases have much larger upside than follow-on smart TV or speaker purchases because consumers expand coverage and subscribe to cloud storage or AI features, making cameras “a key category for many smart home companies”
8. For vacuums, the differentiation axis has moved from basic vacuuming and mapping to AI object recognition and mopping, with Chinese brands such as roborock, Eufy, Dreame and Narwal pulling ahead
9. Smart speakers are expected to be re-simplified—fewer displays, fewer cameras and simplified voice input—while conversational AI becomes the selling point
10. The caveat is that these are 2024-vintage IDC forecasts reaching only to 2028, so they should be treated as category logic and baseline structure, not current 2026 volumes
11. The central strategic tension is monetisation. IDC’s security growth thesis depends on recurring cloud storage and AI subscriptions
12. security is IDC’s largest named category
13. IDC’s security growth thesis depends on recurring cloud subscriptions
</statements>

Begin the assessment now. Output only the JSON list, without any conversational text or explanations.