The blind Ernest Arce frequently utilizes NaviLens, which is currently accessible at 100 bus stations in the San Antonio area. He claims that almost all of the system's stops are equipped with QR code technology, which is helpful for running errands outside of his regular schedule. Credit: San Antonio Report / Raquel Torres
Small, vibrant QR codes are being installed at nearly every VIA Metropolitan Transit bus stop in San Antonio as part of a system that will help visitors and residents who are blind, have low vision, or do not understand English traverse the city more easily.




Within the following year, the NaviLens system will be fully integrated at over 6,000 bus stations in San Antonio, of which 100 currently have it installed.

The Deneb-Cancun, or Dencun, network update for Ethereum is set to happen on Wednesday. Its goals are to enhance user experience and reduce transaction fees for some users on the Layer 2 blockchains of the network. The native currency of the Ethereum network, ether (ETH), was trading on Tuesday for slightly under $4,000.

What is the Ethereum update for Dencun?

Wednesday is the expected activation date of the Dencun update, which aims to prioritize security, efficiency, and scalability by implementing a number of Ethereum Improvement Proposals (EIPs).

The Ethereum Foundation claims that EIP-4844 for proto-danksharding, which aims to maximize gas prices for Layer 2 network (L2) data and improve the network's capacity to manage higher transaction volumes via those secondary levels, is the most significant modification.1.

When the upgrade is released on Wednesday, exchanges may experience delays in processing Ethereum transactions. Coinbase (COIN) stated on Monday that, although it may vary, it anticipates that the update will cause disruptions that will persist for at least an hour starting at 6:45 a.m. Pacific time.2.
Global Coinbase. "Coinbase Status."

Kraken is planning for roughly fifteen

Gas, Blobs, and Rollups: What's Changing?

Rollups and other layer 2 networks are supplementary blockchains constructed on top of the Ethereum foundation network. Rollups bundle transactions in an attempt to reduce transaction volumes. Although the transactions are finalized on the main Ethereum blockchain, the first verification for those transactions takes place off-chain.

Even after compression, nodes handling transactions retain Layer 2 data indefinitely, increasing their hardware needs, which are then passed on to consumers in the form of higher transaction or gas fees.4 This data storage is the reason behind more than 90% of the fees that users pay on rollups.5.

This will change with the Dencun upgrade, which will enable Layer 2 network data to be added to the underlying Ethereum blockchain as "blobs," or transient, more efficiently stored data, instead of permanent data. Blob data is available as of this writing and will be for eighteen days.4 The goal of this is to cut expenses.

"L2s need about 16 gas each byte of data that they store on Ethereum. Blobs are being introduced, along with a new pricing market specifically for blob data.

Ethereum: More Competitive and Accessible?

"At the moment, Ethereum's poor throughput, expensive user fees, and sluggish transaction speed are impeding its performance. Compared to competitors like Solana, Ethereum is far more expensive, with average transaction costs of $2.3 as of February 22nd. End consumers could be driven away by this and into other chains, according to a report by cryptocurrency asset manager Grayscale.

According to the Grayscale analysis, the Dencun update "may help Ethereum compete in terms of scalability with faster chains."

Apart from setting it apart from rivals, Fidelity notes that the most recent Ethereum network modifications may facilitate the network's evolution from a general-purpose blockchain to an international database for Layer 2 networks. The most accurate method of assessing the Dencun upgrade's success will be

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